Isotopes, Ions, and Valence Electrons Quiz Review

Mercury is the only metal that is a liquid at room temperature.

• True
• False

Valence electrons tend to be attracted by the nuclei of other atoms as much as, or more than, the nucleus of their own atom.

• True
• False

Fluorine needs just one valence electron to fill its outer energy level; phosphorus needs three.

• True
• False

____________________ electrons are the electrons in the outer energy level of an atom that can participate in interactions with other atoms.

• Ion
• Valence
• Cation
• Anion

What is the maximum number of valence electrons an element may have?

• Four
• Five
• Eight
• Ten

How many valence electrons are in an atom of nitrogen?

• Four
• Five
• Eight
• Ten

Which of the following statements about valence electrons and the periodic table is true?

• Elements with the most valence electrons are in group 18.
• All of the elements in group 9 have nine valence electrons.
• The number of valence electrons increases from top to bottom within each group.
• The number of valence electrons decreases from left to right across each period.

When a group 1 element reacts it

• loses one electron.
• gains one electron
• loses two electrons.
• gains two electrons

A diagram that shows just the valence electrons of an atom is called a(n) _______ dot diagram.

• Lewis
• Bohr
• Einstein
• Rutherford

Elements that cannot conduct electricity are classified as _____.

• nonmetals
• metals
• metalloids