Unit 5 Practice Test

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

Which group of the periodic table has five valence electrons?

Back

Group 15.

Front

What are the Alkaline Earth Metals?

Back

The Alkaline Earth Metals are the elements in Group 2 of the periodic table, including beryllium, magnesium, calcium, strontium, barium, and radium.

Front

Which element is smaller: Rb or Na?

Back

Na is smaller than Rb.

Front

What happens to an atom's radius when it gains an electron?

Back

Its radius increases.

Front

What charge does an atom have when it gains an electron?

Back

It becomes negatively charged.

Front

What is electronegativity?

Back

Electronegativity is a measure of an atom's ability to attract and hold onto electrons.

Front

How does electronegativity change down a group in the periodic table?

Back

Electronegativity decreases down a group.

Front

What is the trend of atomic size in the periodic table?

Back

Atomic size increases down a group and decreases across a period from left to right.

Front

What is the relationship between atomic radius and ionization energy?

Back

As atomic radius increases, ionization energy generally decreases.