Periodic Table Trends

Front

What happens to atomic radius as you move down a group in the periodic table?

Back

Atomic radius increases because you add more and more orbitals.

Front

Why are elements at the bottom of the periodic table larger than those at the top?

Back

They have more orbitals.

Front

What is the most reactive nonmetal on the periodic table?

Back

Fluorine (F) is the most reactive nonmetal.

Front

Rank the following elements according to their atomic radius from smallest to largest: Nickel, Silver, Sulfur, Francium, Calcium.

Back

Sulfur < Nickel < Silver < Calcium < Francium.

Front

What makes group 1 and group 17 elements so reactive?

Back

They are the two families that are closest to completing the octet rule.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.

Front

What is the trend in electronegativity as you move across a period from left to right?

Back

Electronegativity increases as you move from left to right across a period.

Front

What is the trend in ionization energy as you move down a group?

Back

Ionization energy decreases as you move down a group.

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

How does the number of valence electrons affect an element's reactivity?

Back

Elements with fewer valence electrons tend to be more reactive as they can easily lose or gain electrons to achieve a stable configuration.