Ionic Bonding

1.When is an atom stable?

• a.when its electrons are evenly distributed through its energy levels

• a.when its lowest occupied energy level is filled with electrons

• a.when its highest unoccupied energy level is filled with electrons

• when its highest occupied energy level is filled with electrons

Tags

NGSS.HS-PS1-1

2.Which description applies to an element that has two valence electrons?

• a.reactive metal

• a.nonreactive metal

• a.reactive nonmetal

• nonreactive nonmetal

3.How do sodium and chlorine both achieve stable electron configurations when they react?

• a.An electron is transferred from the sodium atom to the chlorine atom.

• a.An electron is transferred from the chlorine atom to the sodium atom.

• a.Both atoms gain one electron.

• Both atoms lose one electron.

4.Why do ionic compounds tend to have high melting points?

• a.Ionic compounds contain more than one element, which causes a high melting point.

• a.Ionic compounds cannot absorb energy efficiently because they contain ions.

• a.An ionic compound contains metal atoms that raise its melting point.

• A strong electrical attraction means ions require a lot of energy to move apart.

The ratio of aluminum ions to chloride ions in aluminum chloride (AlC13) is 3:1.

• True

• False

When the highest occupied energy level of an atom is filled with electrons, the atom is stable and not likely to react.

• true

• false

All the noble gases have stable electron configurations with eight valence electrons

• True

• False

A sodium atom has one more electron than a neon atom. Removing one electron would give sodium a stable configuration

• True

• False

Within a period, what happens to the atomic radius as the atomic number of the elements increases?

• Atomic radius increases

• Atomic radius decreases

• Atomic radius stay the same

Compare the atomic and ionic radii for potassium (K)

• The ionic radius for potassium is much smaller than its atomic radius.

• The ionic radius for potassium is much larger than its atomic radius.

• The ionic radius for potassium the same as the atomic radius.