The atomic radius of Argon is smaller than the atomic radius of sodium because the effective nuclear charge increases as we move left to right in a period.
What is the atomic radius?The atomic radius can be described as the shortest distance between the center of the nucleus of the atom and the outermost shell of the atom. An atomic radius can also be defined as half the distance between two atoms of the same element bonded together.
In general, the atomic radius of an atom reduces as we move from left to right in a period on the periodic table because while moving from left to right in a period, there is an increase in the effective nuclear charge. In periods, the valence electrons enter in the same outermost shell.
The atomic radius of atom increases when we move down a group because of the addition of a new principle shell.
Sodium is present at beginning of the third period and the Argon is present at the end of the same period. Therefore, Argon experiences a more effective nuclear charge than sodium so it has a smaller atomic radius.
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which of the following statement is correct for a group of a periodic table.
i} All elements have different valency.
ii} The atomic size decrease as we move down.
iii} The electropositivity increase down the group.
iv} The electronegativity increase down the group.
Answer:
I believe it is B
Explanation:
I am on this lesson too :)
Answer:
III Electropositivity increases down the group
Explanation:
Why do humans have a tailbone? What could it tell us about our past?
Answer:
Monkey have tail we come from monkey
Answer:
The coccyx, or tailbone, is the remnant of a lost tail. ... The coccyx serves as an attachment site for tendons, ligaments, and muscles. Tailbones helped our ancestors with mobility and balance
Explanation:
how to make slime without borax or contact solution
Answer:
lysol and glue pretty simple.
Explanation:
Answer:
glue, and some laundry detergent.
Explanation:
only some laundry detergents work.
for a butter slime all you need is Elmer's wood glue, and gel shaving foam it makes a thick butter like consistency slime.
if you want to get fancy you can add a drop of food coloring and sparkles. these work good for me, you should give them a try. thank you and have a great day! if you like my answer please mark brailyist thanks again. if you have any questions please feel free to ask me! thanks again.
nguyên tử của nguyên tố y được cấu tạo bởi 36 hạt . trong hạt nhân hạt mang điện bằng số hạt không mang điện. số đơn vị diện tích hạt nhân z là bao nhiêu
Answer:
số đơn vị diện tích hạt nhân z là : 12 và 24
can you make hydroxychloroquine from grapefruit and lemon rinds
Hydroxychloroquine cannot be made from grapefruit and lemon rinds.
Hydroxychloroquine is not a natural compound, rather it can only be synthesized from quinoline molecule in the laboratories.
During the synthesis of hydroxychloroquine, several sequential chemical reactions and purifications are done.
Hydroxychloroquine is used in the treatment of:
malariasystemic lupus erythematosus, rheumatoid arthritisBut when grapefruit and lemon rinds are boiled in water, a natural chemical compound known as limonene is obtained.
Therefore, hydroxychloroquine cannot be made from grapefruit and lemon rinds,
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What does wind cause weathering?
A) when cannot cause the weathering of rocks.
B) Wind can blow sand and create new landforms.
C) Wind picks up sand or dry soil
And carries it from one place to another
D) Blowing sand can wear away a rocks surface and break it into smaller pieces
Answer:
D
Explanation:
The blowing sand chips away at the rocks and, over time, the rocks start getting smaller, due to the weathering.
Answer:
Wind picks up sand or dry soil
And carries it from one place to another
Explanation:
Which statement describes a similarity between an apple and gasoline
Answer:
They both contain chemical energy, which people and cars convert into mechanical energy.
Explanation:
Answer:
B)They both contain chemical energy, which people and cars convert into electrical energy.
Explanation:
1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p2
Answer:
batqyqy6w
Explanation:
We may suspend accounts that violate the Brainly Code of Conduct. Look for a follow-up email.
Give 3 physical properties common to most metals
Answer:
What are you a 6 yo? Anyways, the most common properties are, They are good conductors of electricity, They are lustrous and They are sonorous.
A student fills two syringes: one with air and the other with an equal volume of
water. After capping the syringes, the student applies the same amount of
pressure to the plungers and records observations about the change in volume.
Based on the particle model of matter, which of the following statements best
explains the student's observations that the volume of the gas decreases greatly
but the volume of the liquid does not change noticeably?*
Gases expand to fill their containers but liquids do not because particles of gases are
free to move but particles of liquids are fixed in position.
Gases take the shape of their containers but liquids do not because gas particles
have the ability to flow but liquid particles do not.
Gases can have larger changes in volume than liquids can because gas particles
expand and contract but liquid particles do not.
Gases are more readily compressed than liquids are because there is more space
between the particles in a gas than in a liquid.
Here we need to see the differences between a liquid and a gas, and how that affects the volume and effects of pressure on them.
The correct option is:
Gases are more readily compressed than liquids are because there is more space between the particles in a gas than in a liquid.
So we have two syringes, one with air and the other with water.
The student applies the same amount of pressure to both of them, but as water is denser than air, in a given change dV of volume in the syringe, the mass of water is larger than the mass of air.
This means that for the same pressure, we should expect the change in volume to be smaller in the syringe with water.
Why this happens?
Gases are more readily compressed than liquids are because there is more space between the particles in a gas than in a liquid.
This means that for the air is easier to be compressed (the distance between particles is larger, so the same pressure compresses more a gas than a liquid) and exit the syringe than for the water, and this translates to the change in volume per unit of pressure applied, which is larger for gases than liquids.
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Although almost 80% of the atmosphere is made up of nitrogen gas, most living things
don't have the enzymes necessary to use nitrogen directly from the atmosphere. How
we obtain the nitrogen we need to make proteins and DNA if we can't obtain it from
breathing?
Answer:
We don’t have the enzymes necessary to remove nitrogen from the atmosphere; we get our nitrogen from the food we eat. ^^
Although almost 80% of the atmosphere is made up of nitrogen gas, most living things don't have the enzymes necessary to use nitrogen directly from the atmosphere. We obtain the nitrogen we need to make proteins and DNA, if we can't obtain it from breathing we can get it by eating organic plants and animals.
Why is Nitrogen important for humans?Nitrogen is a key element in the nucleic acids DNA and RNA, which are the most important of all biological molecules and crucial for all living things. DNA carries the genetic information, which means the instructions for how to make up a life form.
It is used to make amino acids in our body which in turn make proteins. The human body comprises 3% nitrogen (by mass). It is an essential part of amino acids (makeup proteins), nucleic acids (DNA, RNA), ATP (energy molecule), etc. It is nearly impossible to live without nitrogen.
Therefore, Although almost 80% of the atmosphere is made up of nitrogen gas, most living things don't have the enzymes necessary to use nitrogen directly from the atmosphere. We obtain the nitrogen we need to make proteins and DNA, if we can't obtain it from breathing we can get it by eating organic plants and animals.
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Ill give brainliest if you answer right
Answer:
I DID NOT SEE U QUESTION PROPELY BRO /SIS
Answer two questions below:
Answer:
Atoms,
Molecules
Briefly discuss the 3 most important properties of metals
Answer: Luster: Metals are shiny when cut, scratched, or polished.
Malleability: Metals are strong but malleable, which means that they can be easily bent or shaped.
Conductivity: Metals are excellent conductors of electricity and heat.
Explanation: Hope this helped!
Select the atoms that are lithium with a mass of 7
Answer:
I dont know
Explanation:
I just dont know
when the orbitals or energy levels of an atom are full, it is considered to be stable. which atom in the ground state has a stable electron configuration?
Answer:
Noble gases, atoms which have complete filled outer orbits.
Explanation:
SInce, you have given no options elements like Neon, Helium,etc
Noble elements are the atoms which have stable electronic configuration in the ground state.
What is electronic configuration?
Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.
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relative to electrons and electron states, what does each of the four quantum numbers specify
Answer:
(n, l, m sub l, m sub s)
N: principle quantum number (1,2,3,4,etc)
l: angular momentum quantum number, the shape (l has to be at least 1 less than n, but can be 0 depending on n)
M sub l: magnetic quantum number (l determines this number)
M sub s: spin quantum number (can only ever be 1/2 or -1/2)
Explanation:
The principle, azimuthal, magnetic, and spin quantum numbers specify the principle shell, the shape of the orbital, the number of orbitals, and electron spin respectively.
What are the quantum numbers?The set of numbers that describes the position and energy of the electron are called quantum numbers. Four quantum numbers are principal, azimuthal, magnetic, and spin quantum numbers.
Principal quantum numbers (n) designate the principal electron shell of the atom and the most probable distance between the nucleus and the electrons. A larger value of the principal quantum number indicates a large distance between the electron and the nucleus.
The azimuthal quantum number (l) describes the shape of an orbital in which an electron is present. Its value is equal to the total number of angular nodes in that orbital.
The magnetic quantum number describes the total number of orbitals in a subshell and the orientation of these orbitals. The value of the spin quantum number (s) offers the direction in which the electron is spinning and it has only two possible values +½ and -½.
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Building Vocabulary
Match each term with its definition by writing the letter of the correct definition on
the line beside the term in the left column.
5. nucleus
6. proton
D
7. neutron
c.
8. electron
9. atomic number
10. isotopes
a. the sum of protons and neutrons in the nucleus of an
atom
b. the very small center core of an atom
atoms of the same element that differ in the number
of neutrons, but have the same number of protons
d. the particle of an atom that moves rapidly in the
space outside the nucleus
a specific amount of energy related to the movement
of electrons in atoms
f. the particle of an atom with a positive charge
g. the number of protons in the nucleus of every atom
of an element
h. the particle of an atom that is neutral
11. mass number
e.
12. energy level
a
Answer:
Explanation:
Building Vocabulary
Match each term with its definition by writing the letter of the correct definition on
the line beside the term in the left column.
5. nucleus b
6. proton f
7. neutron h
8. electron d
9. atomic number g
10. isotopes c
11. mass number a
12. energy level e
a. the sum of protons and neutrons in the nucleus of an
atom
b. the very small center core of an atom
c. atoms of the same element that differ in the number
of neutrons, but have the same number of protons
d. the particle of an atom that moves rapidly in the
space outside the nucleus
e. a specific amount of energy related to the movement
of electrons in atoms
f. the particle of an atom with a positive charge
g. the number of protons in the nucleus of every atom
of an element
h. the particle of an atom that is neutral
-. mass number a.
12. energy level e
as a bystander, the _______ approach doesn’t work when drugs or alcohol are involved, as the person you’re trying to stop is more likely to become defensive or hostile.
When trying to step into an argument or misunderstanding between people as a bystander with drugs and alcohol involved, the direct approach won't work.
When trying to make peace between quarelling individuals as a bystander, the direct approach would fail if alcohol or drugs is being held as the prsin might see you as a villian. Only when the person knows and trusts you will this approach work. Hence, when drugs or alcohol is involved, other methods of rendering help should be employed.Therefore, the direct approach won't work in the this scenario.
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what are homologous series
Answer:
A homologous series is a series of compounds with the same general formula, usually varying by a single parameter such as the length of a carbon chain. Compounds within a homologous series typically have a fixed set of functional groups that gives them similar chemical and physical properties.
which scientist also arranged the elements by increasing atomic mass and used the pattern to predict the existence of elements yet to be discovered?
NEED HELP ASAP!!!!!!!!!!!!!!!!!!!!!!
A noble gas has 8 electrons between the p and s orbitals of the outer shell. Helium is the exception because it only has two electrons.
∴ 1s²2s²2p⁶ is the noble gas (neon)What is the source of the full spectrum of UV radiation?
Answer:
Here's ur answer
Explanation:
A student makes two mixtures, both made of the same substances. What must be true of the two mixtures? A Both mixtures have the same density. B Both mixtures have the same temperature. C Both mixtures can be physically separated into its components. D Both mixtures are physically combined in the same proportions.
A student makes two mixtures, both made of the same substances. Both mixtures can be physically separated into its components. Therefore, option C is correct.
What is mixture ?A substance made up of two or more separate chemical compounds that are not chemically linked is referred to as a mixture. A mixture is the physical blending of two or more substances while maintaining their distinct identities. It can take the form of solutions or suspensions.
A pure substance is a single sort of matter that cannot be divided into other kinds of matter by any physical methods. A pure substance has a known and consistent composition at all times.
When two or more distinct substances physically join, a mixture is produced that can be dispersed back into its constituent parts. When two or more compounds combine to create a new substance that cannot be broken down into its constituent parts, a chemical reaction takes place.
Thus, option C is correct.
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Which are proteins that recognize specific proteins on bacteria a.antibodies b.enzymes c.nutrients d.receptors
Answer:
A
Explanation:
Answer:
A. antibodies
Explanation:
bp’s efforts to close the blowout preventer and install a containment dome following an explosion on the deepwater horizon drilling rig is an example of ________ change.
The British Petroleum (bp's) effort to close the blowout preventer and install a containment dome following an explosion on the deepwater horizon drilling rig is an example of regulatory policy change.
The deepwater horizon drilling rig is a semi-submersible, transportable, floating, flexibly oriented drilling rig that could work in sea depths of up to 10,000 feet which is approximately 3,000 meters.
During the explosion that occurred in April 2010, British Petroleum made several efforts to contain the damages made and to prevent further outbreaks of disasters.
Part of the changes was shifting from a blowout preventer that has a specialized valve to seal, manage, and monitor oil and gas wells in order to prevent blowouts to a containment dome (a crucial component of a system meant to control an oil well's underwater blowout).
Therefore, we can conclude that the British Petroleum (bp's) effort to close the blowout preventer and install a containment dome following an explosion on the deepwater horizon drilling rig is an example of regulatory policy change.
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CAN SOMEONE HELP ME TO MY HOMEWORK I GIVE BRAINLIEST PLEASE
direction: LABELS EACH LAYERS USING NUMBER TO SHOW AGE OF ROCKS 1 AS THE OLDEST AND 6 IS TUE YOUNGEST PUT THE NUMBER ON THE CIRCLE PROVIDED IN EACH LAYER
I believe this is correct! :D
how many atoms are there in 1.25 moles of Zn?
Answer:
7.53×10^23
Explanation:
i dont know how
Answer:
There are 6.25×10²³ atoms in 1.25 moles of Zn
A baseball player hits a ball with 36 N of force. With that force, it causes the ball to accelerate at 120 m/s2. What is the mass of the baseball?
Answer:
0.3 kg
Explanation:
This can be dealt with using (a simplified version of) Newton's Second Law:
Force = mass x acceleration
We need to re-arrange the formula to get the mass of the ball isolated, on its own side of the equation. So we get:
mass = force/acceleration
So, now we just need to substitute the number we do have to get:
mass = 36/120 = 0.3 kg
Hope I helped! :)
what is the physical state of gold at room temperature
Answer:
solid
Explanation:
gold is relatively unreactive and exists as a solid at room temperature
It is found as a solid in gold mines, and in gold nuggets in river beds