This problem is providing the ionic radius of an anion, A²⁻ as 0.290 nm and asks for that of the cation A²⁺ in comparison to the former.
Firstly, we need to recall the concept of ionic radius, as the distance between the nucleus and the outermost electron shell of an ion. In such a way, we can have two scenarios:
1. Anions result from the gain of electrons exhibited by a nonmetal, which means they turn out bigger than the neutral atom.
2. Cations result from the loss of electrons exhibited by a metal, which means they turn out smaller than the neutral atom.
With the aforementioned, we infer that the cation A²⁺, will me smaller than the anion A²⁻, which means it will have an ionic radius smaller than 0.290 nm.
Learn more:
https://brainly.com/question/12026272https://brainly.com/question/19032815The equation shows a neutralization reaction. H2SO4 2NaOH Na2SO4 2H2O What is Na2SO4? an acid a base a salt an ion.
8. In an ionic bond, electrons are
electrons are
while in a covalent bond,
?
Answer:
in covalent bond electrons are shared by atoms
please anyone please this is due today!! help for a BRAINLIEST
For today's assignment, you need to balance and classify each of the following equations as synthesis, decomposition, single replacement, double replacement, or combustion.
Answer:
Explanation:
Im sorry all i know is that #3 is for sure combustion
please help I attached an image
Answer:
B
Explanation:
Nonmetals have nearly full valence shells and try very hard to get that last few electrons to complete their valence shell. This allows them to achieve noble gas stability. This is why they have high electronegativities and electron affinities.
Why did me need to have the same molecules in each bottle? and what would have happened if we didn't use the same molecules?
Background info: We learned about molecules and how when a object is heated the air becomes less dense and the molecules is the opposite since they don't spread out and become more dense. What I mean with this question is in class we experimented by putting a bubble on a bottle and putting it on a hot water, the water made the molecules inside less dense and the bubble went up but when we tried cold water the bubble went down.
Answer:
it's just like doing a test grade on children if you give them different tests they might not come up with the same results, the molecules need to be the same or else the experiment will be even.
Explanation:
whenever water is hot the molecules will bounce really fast in the bottle, whenever water is cold he will go really slow in the bottle
Consider this reaction: 2H CO32- → H2O CO2. Identify each of the following as a product, a reactant, or a coefficient. CO32-: H2O: CO2: The 2 in front of H :.
Answer:
The 2 in front of the H is a coefficient.
H and (CO3)2 are reactants.
H2O and CO2 are products.
This reaction is an example of Combustion.
Answer:
CO32-: reactant
H2O: product
CO2: product
The 2 in front of H+: coefficient
Explanation:
This is the real answer, I got it right on edge or whoever you write it.
How long does it take far Uranus to complete one revolution (orbit) around the sun?
how spectral lines are formed
=Spectral lines are produced by transitions of electrons within atoms or ions. As the electrons move closer to or farther from the nucleus of an atom (or of an ion), energy in the form of light (or other radiation) is emitted or absorbed.…
Answer:
Spectral lines are produced by transitions of electrons within atoms or ions
hi. can you help me
What is the relationship between the concentration and the rate of the reaction?
negative
neutral
positive
Answer:
When the concentration of all the reactants increases, more molecules or ions interact to form new compounds, and the rate of reaction increases. When the concentration of a reactant decreases, there are fewer of that molecule or ion present, and the rate of reaction decreases.
Answer:
Negative
Explanation:
Can anyone help meee
calculate the solubility product for the following solutions:
a) a saturated solution of cadmium sulfide, CdS (solubility = 1.46 • 10 ^ -11 mol / l
b) a saturated solution of calcium fluoride, CaF2, containing 0.0168g / l CaF2
Answer:
what is total amount of saturated solution
Propose an explanation for why the element carbon, rather than sodium, is important in forming natural polymers?
I need this ASAP
There are no transition elements between the Group 2 element magnesium and the
Group 3 element aluminium.
Give a reason why, in terms of electronic structure.
Answer:
Atomic orbital energy ordering.
Explanation:
The transition metals constitute the d-block. The answer to your question has to do with the energy ordering of atomic orbitals. Specifically, the 3s orbitals are lower in energy than 3p, which are lower in energy than 4s, which are lower in energy than 3d (remember the principal quantum number for d orbitals is one minus the principle quantum number of the shell so n = 4 level's d orbitals are the 3d orbitals). According to the Aufbau principle, atomic orbitals are filled with electrons from the lowest energy up. So the orbitals would have to be filled in the order of 3s, 3p, 4s, and then 3d. Magnesium has its last valence electron residing in the 3s orbital and Aluminum has its last valence electron residing in the first 3p orbital (specifically the 3px orbital, which is aligned horizontally in the 3d plane. The three p orbitals for all principle quantum levels are px, py, pz, with the x, y, z describing the orientation in the 3d plane). The 3d has not yet been reached in terms of energy ordering. This is why there are no transition elements between magnesium and aluminum, in terms of electronic structure.
How
many
moles is 2.55 X 1026 atoms of Neon?
Answer:
423.44 moles
Explanation:
An Oxygen atom Isotope has an overall charge of -1. How many electrons does it have?
Answer:
8 electrons.
Explanation:
When gravity is the only force acting on an object, the object is said to be in__.
Blood has a mass-volume percent of NaCl of 0.9%. What mass (g) of NaCl is present in a liter of blood
The mass (g) of NaCl that is present in a liter of blood is 0.347g.
HOW TO CALCULATE MASS:
The mass of a substance can be calculated by multiplying the decimal mass-volume of the substance by its molar mass. According to this question, Blood has a mass-volume percent of NaCl of 0.9%. This means that 0.9/100 = 0.009g of NaCl is present in each 100g of blood. Molar mass of NaCl = 23 + 35.5 = 38.5g/molMass of NaCl in a liter of blood = 38.5 × 0.009Mass of NaCl in a liter of blood = 0.347g of NaCl. Therefore, The mass (g) of NaCl that is present in a liter of blood is 0.347g.Learn more at: https://brainly.com/question/15743584?referrer=searchResults
what is distillation used to seperate
Distillation is used to separate liquids from nonvolatile solids as in separation of alcoholic Liquors from fermented materials or in the separation of two or more liquids having different boiling points as in the separation of gasoline Carrison and lubricating oil from crude oil
Answer: It is used to separate a solvent from a solute.
Explanation:
Balance the following equations:
1.
Fe(s)+ O2(g) —> Fe2O3(s)
Answer:
4Fe(s)+3O2(g) ----> 2Fe2O3(s)
How does One determine number of electron domains in molecul or ion
Answer:
The number of electron domains in a molecule or ion is the number of bonds (double and triple bonds count as one domain) plus the number of nonbonding (lone) electron pairs.
Explanation:
BRAINLIEST TO CORRECT ANSWER
Answer:
A right? I'm pretty sure it's A
How does calculating the kinetic energy of an object at different velocities help understand the relationship between kinetic energy and velocity?
Answer:
Kinetic energy depends on the velocity of the object squared
Explanation:
Kinetic energy depends on the velocity of the object squared. This means that when the velocity of an object doubles, its kinetic energy quadruples. ... Kinetic energy must always be either zero or a positive value. While velocity can have a positive or negative value, velocity squared is always positive.
Students in class argue about whether salt (NaCl) or water (H2O) has stronger intramolecular forces. Which argument is BEST?
Question 3 options:
Water because it is a common material and will have stronger intramolecular force.
Water is attracted to salt and salt dissociates, so water has stronger intramolecular forces.
Salt never melted and water has a lower boiling point, so salt has stronger intramolecular forces.
Salt is a solid and water is a liquid, so water has stronger intramolecular forces.
Since intermolecular forces is stronger in a solid than a liquid, then NaCl has stronger intermolecular forces than H2O.
Intermolecular forces exists between molecules of the same or different kinds. Water has a dipole moment hence it can interact effectively with the ions in NaCl. This leads to an ion dipole interaction that results in the dissolution of NaCl in H2O.
NaCl is a solid and water is a liquid. Since intermolecular forces is stronger in a solid than a liquid, then NaCl has stronger intermolecular forces than H2O.
Hence, the best argument that compares the intermolecular interactions in water and NaCl is; salt is a solid and water is a liquid, so water has stronger intramolecular forces.
Learn more: https://brainly.com/question/12108425
Does ZnS,MnS,NiS and CoS (Group IV Sulphides) dissolve in dil.HCl? And I want to know the reasons
Answer:
..
Explanation:
In a significantly acidic medium, even a soluble sulfide like sodium sulfide will not facilitate precipitation of Fe, Zn, Mn, Co and Ni as their sulfides.
Help Please
I Have to finish this assignment asap
Answer:a. limiting reactant
b. actual yield
c. mole ratio
d.excess reactant
e.theoretical yield
f.stoichiometry
g.percent yield
h.limiting reactant
i.theoretical yield
Explanation: ..
Ammonium nitrate criss cross formula
Answer:
By using the criss cross method,the -1 charge of nitrate ion is shifted to ammonium ion and +1 charge of ammonium ion is shifted to nitrate ion. In this way, the final formula NH4NO3 is formed for the ammonium nitrate.
in what states of matter are the atoms constantly moving in a substance or material?
Answer:
LIQUIDExplanation:
A substance that flows and keeps no definite shape because its molecules are loosely packed and constantly moving. It takes the shape of its container but maintains constant volume.
what is the unique characterization of a ph buffer?
What makes a charged object attract an uncharged object?
A. The charge in both objects move around.
B. The charged object is positively charged.
C The charges move in the uncharged object.
D The uncharged object becomes negatively charged
Answer:
C
Explanation:
When we put a charged object near an uncharged object, it produces opposite charges in the near end of the uncharged object by electric induction. ... If we bring it near an uncharged sphere, the sphere forms negative charge near the glass rod, and positive charged on the end away from glass rod
How many eggs are in 3 dozen eggs? Use the dimensional analysis for this for practice.
Answer:
36 eggs
Explanation:
12 eggs in each carton
12 + 12 + 12 = 36 eggs
or 3 * 12 = 36 eggs
Hope this helps, have a nice day/night! :D