Atomic Radius Practice Test

Front

How does the atomic radius change as you move down a group in the periodic table?

Back

The atomic radius increases because the number of energy levels increases.

Front

What happens to the atomic radius as you move across a period from left to right?

Back

The atomic radius decreases because the nuclear charge increases.

Front

Why does the atomic radius decrease across a row in the periodic table?

Back

It decreases due to more protons in the nucleus, which pull the electrons closer.

Front

Do boron (B) and aluminum (Al) have the same number of energy levels?

Back

No, boron has 2 energy levels while aluminum has 3.

Front

Which element has a larger atomic radius: carbon or silicon?

Back

Silicon has a larger atomic radius than carbon.

Front

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

Back

The atomic radius increases due to the addition of electron shells.

Front

What is the effect of increasing nuclear charge on atomic radius?

Back

Increasing nuclear charge pulls electrons closer, decreasing atomic radius.

Front

How many energy levels does sodium (Na) have?

Back

Sodium has 3 energy levels.

Front

What is the atomic radius of an element?

Back

The atomic radius is the distance from the nucleus to the outermost electron shell.

Front

Which has a smaller atomic radius: chlorine (Cl) or fluorine (F)?

Back

Fluorine has a smaller atomic radius than chlorine.