3.2 Periodic Trends - Atomic Radius

Front

Atomic radius generally increases as we move __________.

Back

down a group and from right to left across a period.

Front

Which atom has the largest radius?

Back

Ca.

Front

Which ion has the smallest radius?

Back

Ga³⁺.

Front

The more protons there are, the __________.

Back

Stronger the pull.

Front

Order the following in increasing atomic radii: Ra, Be, Ca, Rb, H.

Back

H, Be, Ca, Rb, Ra.

Front

What is atomic radius?

Back

The distance from the nucleus of an atom to the outermost shell of electrons.

Front

How does atomic radius change across a period?

Back

Atomic radius decreases from left to right across a period.

Front

How does atomic radius change down a group?

Back

Atomic radius increases down a group.

Front

What is the trend of ionic radius for cations compared to their neutral atoms?

Back

Cations are smaller than their neutral atoms.

Front

What is the trend of ionic radius for anions compared to their neutral atoms?

Back

Anions are larger than their neutral atoms.