Atomic Radius Trends

Front

What is a positively-charged ion which forms when an atom loses electrons?

Back

Cation

Front

What is one-half the distance between the nuclei of identical atoms that are bonded together?

Back

Atomic radius

Front

Which order is correct from largest to smallest atomic radius?

Back

Thallium, Indium, Gallium, Boron

Front

Which element's atom is the smallest?

Back

Tin

Front

Size _________ as you go across a period on the periodic table.

Back

decreases

Front

What is the trend of atomic radius as you move down a group in the periodic table?

Back

Increases

Front

What is the reason for the increase in atomic radius down a group?

Back

Addition of electron shells.

Front

What is the effect of nuclear charge on atomic radius?

Back

Increased nuclear charge pulls electrons closer, decreasing atomic radius.

Front

What is the general trend of atomic radius across a period?

Back

Decreases from left to right.

Front

What is an anion?

Back

A negatively-charged ion formed when an atom gains electrons.