Periodic Trends Atomic Radii

Front

What is the correct order of size among anions, atoms, and cations?

Back

Anion > Atom > Cation

Front

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

Back

H, Be, Ca, Rb, Ra

Front

Which atom has the largest atomic radius: potassium, rubidium, francium, or cesium?

Back

Francium

Front

What periodic trend relates to the width of a given atom?

Back

Atomic Radius

Front

As you move up group 16, how does the reactivity of successive elements change?

Back

Decreases

Front

Define atomic radius.

Back

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

Front

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

Back

Atomic radius increases.

Front

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

Back

Atomic radius decreases.

Front

What is an anion?

Back

A negatively charged ion formed when an atom gains one or more electrons.

Front

What is a cation?

Back

A positively charged ion formed when an atom loses one or more electrons.