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gayaneshka [121]
3 years ago
6

One electron is removed from both an Na atom and a K atom, producing two ions. Using principles of atomic structure, explain why

the Na ion is much smaller than the K ion. Discuss both ions in your answer.
Chemistry
2 answers:
olganol [36]3 years ago
7 0

Answer:

Explanation:

The Na ion has 2 electron shells while the K ion  has 3 electron shells making it bigger.

Anni [7]3 years ago
3 0

Answer:

In brief, electrons in the K⁺ ion occupy three main electron shells. In comparison, electrons in the Na⁺ ion occupy only two main electron shells.

Explanation:

Consider the electron cloud model for the structure of an atom or an ion. The nucleus was very dense and small. It was highly located at the center of the atom or the ion. Electrons occupy most of the space of the atom or ion.

If there are more than one electrons, they would be located in one or more main energy levels. Generally, for two atoms/ions with a similar number of protons, the one with more filled main electron shells would have a larger radius.

Electrons in a neutral Na atom occupy three main energy shells. The outermost shell contains only one electron. That electron would be removed first, such that in the Na⁺ ion, electrons would occupy only two main shells.

Similarly, electrons in a neutral K atom occupy four main energy shells. The outermost shell contains only one electron. That electron would be removed first, such that in the K⁺ ion, electrons would occupy three main shells.

Since there are more occupied electrons shells in K⁺ than in Na⁺, K⁺ would have a larger ionic radius.

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enyata [817]

Option C: Introducing sewage in water systems increases the concentration of solids.

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Sewage has some solid particles that can't be dissolved or decomposed. This then leads to the concentration of solids at the base of the water body. This further leads to the growth of various organisms using dissolved oxygen and leads to the deterioration of water quality.

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8 0
2 years ago
Use the information below to explain why the atomic radius decreases down a group.
notsponge [240]

Answer:

Detail is given below

Explanation:

Atomic radii trend along group:

As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.

As the size of atom increases the ionization energy from top to bottom also  decreases because it becomes easier to remove the electron because of less nuclear attraction and as more electrons are added the outer electrons becomes more shielded and away from nucleus.

In A we can see that there is one positive charge and force of attraction is 2.30×10⁻⁸ N and distance is 0.10 nm

In B we can see that negative charge is further away from nucleus because of greater distance thus force of attraction will be less. 0.58×10⁻⁸ N

In C this distance further increases and force also goes in decreasing 0.26×10⁻⁸ N.

3 0
3 years ago
To reflect about a problem means to ask yourself about any possible ‘what ifs.’ Please select the best answer from the choices p
Naily [24]
The answer is true true true
4 0
3 years ago
Read 2 more answers
Each of the given statements describes a type of column chromatography. Match the statements to the type of chromatography they
vlada-n [284]

Answer:

The proper matching is given below.

Explanation:

a Separate molecules by size    size exclusion chromatography

b Separate molecules by charge Ion exchange chromatography

c The stationary phase has a covalently bound group to which a protein in the mobile phase can bind.                  Affinity chromatography

d uses mobile phase and stationary phase to separate protein Size exclusion chromatography

e The stationary phase contain  cross linked polymers with different pore size

                                                                  Size exclusion chromatography

f can separate molecules based on protein ligand binding   Affinity chromatography

g The stationary phase may contain negatively or positively charged groups

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6 0
3 years ago
Watch the animation and identify the correct conditions for forming a hydrogen bond. check all that apply. check all that apply.
OLga [1]
The ch4 molecule exhibits hydrogen bonding.
This statement is false. A CH4 molecule do not have a hydrogen bonding instead it has dipole dipole attraction.

Hydrogen bonding occurs when a hydrogen atom is covalently bonded to an N, O, or F atom.
This would be a true statement. A hydrogen bond is present when an atom of hydrogen shares electrons with O, N or F atom.

A hydrogen bond is equivalent to a covalent bond.
This is a false statement. A hydrogen bond is an intermolecular force of attraction while covalent bond is a intramolecular force. So, they would mean different things.

a hydrogen bond is possible with only certain hydrogen-containing compounds.
This would be true. Without the presence of an hydrogen atom definitely there would be no hydrogen bond.

a hydrogen atom acquires a partial positive charge when it is covalently bonded to an f atom.
This would be true since a HF is a polar molecule.
6 0
4 years ago
Read 2 more answers
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