Which of the atomic models represents the most reactive element?
A. Argon, because it has three energy levels with eight electrons in the third level.
B. Lithium, because it has two energy levels with one electron in the second level.
C. Aluminum, because it has five energy levels with two electrons in the third level.
D. Carbon, because it has two energy levels with four electrons in the second level.
Answers
The most reactive element is represented by the atomic model for lithium, which consists of two energy levels with an electron in the second level. So, the correct option is B.
What is Reactive element?A reactive element is one that forms chemical bonds with other elements to obtain a stable electron configuration. Reactive elements are chemically unstable. The amount of valence electrons in an element's highest energy level determines how reactive it is.
The element with the fewest number of energy levels and most reactive valence electrons in the above example is lithium, which has only two energy levels and one electron in the second level. Lithium in this state has one valence electron, which makes it very reactive and predisposed to form bonds with other elements filling its outermost shell.
Therefore, the correct option is B.
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Related Questions
Which is not part of the function of the normal cell cycle? (A) cell growth (B) DNA replication (C) cell division (D) cell death
Answers
Explanation:
The original cell is divided into two new cells(After mitosis). Therefore, each new cell has a complete set of chro- mosomes (DNA) as well as half the organelles from the original parent cell.
Cell death is not part of the function of the normal cell cycle, a strictly controlled cell mechanism known as programmed cell death, or apoptosis, hence option d is correct.
What is cell death?Eliminates cells that are no longer required or pose a hazard to the organism in multicellular creatures.
The body's mechanism of cell death is crucial. When cells are not required, as at some developmental phases, for example, they are removed.
For instance, the outer layer of the skin is formed of dead cells, which form a structure in the body that is also apoptosis.
Therefore, cell growth, DNA replication, cell division are part of the cell cycle, a controlled cell death mechanism known as programmed cell death, or apoptosis, hence option D is correct
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PLEASE EXPLAIN IT'S FOR A QUIZ TOMORROW!!!!!!!!!!!
Two test tubes were filled with a solution of bromthymol blue. A student exhaled through a straw into each tube, and the bromthymol blue turned yellow. An aquatic green plant was placed into each tube, and the tubes were corked. One tube was placed in the dark, and one was placed in direct sunlight. The yellow solution in the tube in sunlight turned blue, while the one in the dark remained yellow. Which statement best explains why the solution in the tube placed in sunlight returned to a blue color?A. Oxygen was produced by photosynthesis.
B. Carbon dioxide was removed by photosynthesis.
C. Carbon dioxide was produced by respiration.
D. Oxygen was removed by respiration.
Answers
Answer:
c. is the correct answer
Explanation:
brainliest please?
I hope this helps you with your question.
Energy + 6 CO2
6 H20 → CH2206
602
Photosynthesis
O Cellular Respiration
help ‼️
Answers
Answer:
photosynthesis
Explanation:
Offset and Cardi B's baby, Kulture, is blood type B. Is this their child?
o Yes, because they can only have blood type B babies.
o No, because they can only have blood type O babies.
o Yes, because they can have blood type AB and B babies.
o No, because they can have blood type A and AB babies.
Answers
Into which chamber of the heart does oxygenated blood enter?
Answers
Which type of evidence for evolution is most accurate in determining evolutionary relationships- morphology or biochemical/ molecular evidence? Why?
Answers
Darwin could compare only the anatomy and embryos of living things. Today, scientists can compare their DNA. Similar DNA sequences are the strongest evidence for evolution from a common ancestor. Look at the diagram in Figure 9.3
What is the sediment deposited by surface water?
Answers
Answer: Delta
Explanation:
A delta is the sediment deposited by the surface water. When the river flows it carries the sediments from the bedrock and also from the surface of the top layer of the soil. These sediments are deposited on a fan like formation that is called as delta. It leads to the development of a landform. It is the most fertile landform as the sediments are rich in mineral content that promote the growth of the plants. This develops when river enters into the ocean, estuary, reservoir, lakes, and any other water body supplying the sediments on the surface.
Which species has the MOST RECENT common ancestor with the ROBIN?
Hagfish
(outgroup)
Salmon
Jaws
Frog
Keratinous
scales
Lizard
Lungs:
Four limbs
Alligator
D
Gizzard
Feathers
Claws
Robin
or nails
G
Rat
Fur;
Mammary
Glands
Gorilla
Time
O Lizard
O Salmon
O Gorilla
Answers
Which statement describes a difference between predators and prey? Choose the correct answer. A Prey are types of plants, whereas predators are types of animals. B Prey remain in one place, but predators move around within the ecosystem. C Prey get energy only from plant materials, and predators eat only animals. D Prey are hunted for food, and predators capture and eat other animals to get energy.
Answers
Answer:
D
Explanation:
The rest can all be ruled out
-best of luck!
Answer:
D Prey are hunted for food, and predators capture and eat other animals to get energy.
Please answer ASAP the right answer only no random ones thank you
Populations of two species of grasshoppers are introduced to a meadow ecosystem. Each species is
adapted to eat grass and similar plants of the meadow, and they fill the same niche. According to
Darwin's ideas about competition, which of the following changes is MOST likely to occur?
a. Only one population will thrive in the meadow; the other population will decrease to
zero .
b. Either both populations will thrive in the meadow, or neither population will thrive.
c. Both populations will eventually remain constant at the same non-zero number
d. Both populations will eventually remain constant, but at different non-zero numbers.
e. Both populations will increase and decrease in a cycle
Answers
Darwin's ideas about competition, which of the following changes is MOST likely to occur, Both populations will increase and decrease in a cycle.
What is the effect of Amensalism?Amensalism is an relations where an organism inflicts damage to another organism without any expenses or benefits received by itself.
Amensalism explains the adverse effect that one organism has on another organism.
Thus, Darwin's ideas about competition, Both populations will increase and decrease in a cycle.
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Question 8 (1 point)
Crabs, lobsters, and crayfish have a suit of armor that protects their soft bodies
called an
abdomen
thorax
exoskeleton
calcium
Answers
C: Exoskeleton
Explanation:
Unlike humans and other mammals, many insects and crustaceans alike have this tough outer layer that looks similar to a skeleton! This would be identified as its exoskeleton.
I hope this helped my darling!
Answer:
c
Explanation:
How many different amino acids can be used in the construction of a protein
Answers
Answer:
20
Explanation:
There are 20 types of amino acids in proteins, each one has different chemical properties. A protein molecule is made from a long chain of these amino acids, each linked to its neighbor through a covalent peptide bond.
Dhjwbsjsbsdjiwjwiwkeiw
Answers
Answer: 3
Explanation: 3
Answer:
Your answer is 3. Hope you like my answer.
guys what fruit hasa lot of it with a stem? WILL GIVE BRAINLIEST
Answers
Answer:
Fruits such as apples and pears grow on trees, while melons, such as honeydew and watermelons, grow along large vine-like stems. Berries such as strawberries, blueberries and gooseberries grow on shrubs.
Explanation:
Is the Therapy scenarios "paraphrasing" or "reflection"?
client: I didn't know what to do, I was so confused and angry
therapist: So you are feeling confused and angry
A. Paraphrasing
B. Reflection
Answers
Calculate the ratio of the size of the bacterial cell to the size of the mesophyll cell
bacterial cell is 1 micrometer
mesophyll cell is 0.05mm
Answers
Answer:20 to 1
Explanation:
]
The ratio of the size of the bacterial cell to the size of the mesophyll cell is 1:20. It means that 20 bacterial cells can fits into a mesophyll cell.
Given here,
Size of the bacterial cell = 1 micrometer
Size of the mesophyll cel= 0.05mm
Equalize the measuring unit,
1 micrometer = [tex]\bold{10^-^6 m}[/tex]
1 millimetre = [tex]\bold { 10^-^3 m}[/tex]
So the ratio will be
[tex]\bold { = \dfrac{ 1 x10^-^6 m}{0.05 x 10^-^3 m} }\\\\\bold { = \dfrac 1{20} }[/tex]
Therefore, the ratio of the size of the bacterial cell to the size of the mesophyll cell is 1:20.
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The spongy layer____
A.) can't do photosynthesis
B.) is the outermost layer
C.) has no chloroplasts
D.) contains stomata
Answers
Answer:
B
Explanation:
is the outermost layer
3 цуулы дфеу игешеы щл гмг фтнцфны еру зукыщт фищму ьу шы сщккусею
1
Select the correct answer.
The
is the underlying message or idea in a literary work.
A.
summary
B.
lesson
Oc.
theme
OD.
subject
Answers
Answer:
i think the correct answer is c
Explanation:
hope this is correct
What is an example of a relationship between organisms in which an organism produces energy that is used by another organism to The detriment of the original organism
Answers
Answer:
Tree frogs use plants as protection. Golden jackals, once they have been expelled from a pack, will trail a tiger to feed on the remains of its kills. Goby fish live on other sea animals, changing color to blend in with the host, thus gaining protection from predators.
Explanation:
Data
Record the glucose meter reading in the table below for each of the trials.
Please note that blood glucose levels will vary from person to person, and the levels given here are examples only. The levels given for the person with type 1 diabetes are assuming that no extra insulin was injected to account for the carbohydrate intake.
Subject A (without diabetes)
Food type
Starting blood glucose level (mg/dL)
Blood glucose level after 1 hour (mg/dL)
Blood glucose level after 2 hours (mg/dL)
Blood glucose level after 3 hours (mg/dL)
100
100
100
100
Subject B (with type 1 diabetes)
Food type
Starting blood glucose level (mg/dL)
Blood glucose level after 1 hour (mg/dL)
Blood glucose level after 2 hours (mg/dL)
Blood glucose level after 3 hours (mg/dL)
100
100
100
100
Answers
Answer:
The North produced 17 times more cotton and woolen textiles than the South, 30 times more leather goods, 20 times more pig iron, and 32 times more firearms. The North produced 3,200 firearms to every 100 produced in the South.
Explanation:
Subject A = The blood glucose level will decrease after 3 hours
Subject B = The blood glucose level will stay the same after 3 hours
I'm not sure about the rest...
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Answers
i think i remember having this question one sum before :)
Define metamorphosis
Answers
Explanation:
(in an insect or amphibian) the process of transformation from an immature form to an adult form in two or more distinct stages.
"the persistence of the larval tail during metamorphosis"
or
a change of the form or nature of a thing or person into a completely different one, by natural or supernatural means.
"his metamorphosis from presidential candidate to talk-show host"
Answer:
Metamorphosis is the change in physical form, appearance, structure, or substance.
Explanation:
Opsins are proteins that are found in the light-sensing cells in the human eye. Different opsin proteins are sensitive to different colors of light. The instructions for creating the type of opsin sensitive to red light are found on a gene known as OPN1LW, which is on the X chromosome. A genetic mutation in the OPN1LW gene can lead to a form of color blindness that affects a person's ability to detect red light. However, women have two copies of the X chromosome, and they have normal color vision if only one copy contains the mutation. Why do women who carry one copy of the mutated gene still have normal color vision?
Answers
Answer:
Women who carry one copy of the mutated gene still have normal color vision because they have another copy, which is not mutated, in the other X chromosome that will be the dominant one. As a result, the women are carriers of the mutated gene but not color blind.
Explanation:
Colorblindness is a sex-linked mutation. A woman has two X chromosomes, while a man has one X chromosome and one Y chromosome. The mutated gene that causes color blindness is on the X chromosome, and it is OPN1LW. So if a woman has one mutated OPN1LW in one of her two X chromosomes, the OPN1LW gene in the other X chromosome will be the dominant one stopping the woman from being colorblind.
In the case of men, as they only have one X chromosome, if there is a mutation on the OPN1LW in the X chromosome, the men will be colorblind because there is no extra copy of the gene, as it is in women.
DESCRIBA EL CLIMA DESÉRTICO
Answers
I was disappointed in the answers of my last question. Here's another, What are the very short-legged cat breed called. The winner will get 5 stars and a thanks.
Answers
Answer:
Munchkin Cats
Explanation:
How is your body temperature held constant despite different weather temperatures
outside?
Answers
Answer:
Core body temperature The body can only stay at a constant temperature if the heat generated is balanced and equal to the heat lost. Although the core temperature must be close to 37°C, fingers and toes can be colder. This is because energy is transferred from the blood as it travels to the fingers and toes.
Answer: When heat activates sweat glands, these glands bring that water, along with the body's salt, to the surface of the skin as sweat. Water evaporating from the skin cools the body, keeping its temperature in a healthy range.
Explanation:
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Many scientists believe that stem cell research will one day lead to new treatments for diseases, but some people have ethical concerns about this research.
Which of the following characteristics of stem cell research is the most likely source of ethical controversy?
A. Stem cells naturally produce many different cell types.
B. Stem cell research requires specialized equipment.
C. Stem cells can replace damaged cells with healthy cells.
D. Stem cells are often extracted from human embryos.
Answers
Answer:
D. Stem cells are often extracted from human embryos.
Explanation:
This is a major point of ethical concern and is also a root for many abortion conspiracy theories. The reason it is an ethical concern is because harvesting stem cells often times kills the embryo.
What are bio-fuels considered carbon neutral?
Answers
Answer:
Science considers biodiesel to be carbon-neutral because the plants that are the sources of the feedstocks for making biodiesel, such as soybeans and palm oil trees, absorb carbon dioxide (CO2) as they grow. The absorption of CO2 by these plants offsets the CO2 that forms while making and burning biodiesel.
Explanation:
Hope this helps!
¿Que aparato interviene en la digestion?
Answers
Answer: El sistema digestivo humano consta del tracto gastrointestinal más los órganos auxiliares de la digestión (lengua, glándulas salivales, páncreas, hígado y vesícula biliar). La digestión implica la descomposición de los alimentos en componentes cada vez más pequeños, hasta que puedan ser absorbidos y asimilados por el cuerpo.
Explanation:
The amount of substance given one time
Answers
Answer:
moles
hope this helps
have a good day :)
Explanation:
The mole, symbol mol, is the SI unit of amount of substance of a specified elementary entity, which may be an atom, molecule, ion, electron, any other particle or a specified group of such particles; its magnitude is set by fixing the numerical value of the Avogadro constant to be exactly 6.022 141 29 × 1023 when it is ...