Why is helium less reactive than hydrogen?

A. Each helium atom has a full valence electron shell, but each hydrogen atom only has

one valence electron.

B.

Each helium atom has four neutrons, but each hydrogen atom only has one neutron.

Each helium atom has a full protonic power level, but each hydrogen atom only has

one proton.

D.

Each helium atom has two electron energy levels, but each hydrogen atom only has

one electron energy level.

Question

Chemistry

Jazlyn Levine

2 February, 20:57

Why is helium less reactive than hydrogen?

A. Each helium atom has a full valence electron shell, but each hydrogen atom only has

one valence electron.

B.

Each helium atom has four neutrons, but each hydrogen atom only has one neutron.

Each helium atom has a full protonic power level, but each hydrogen atom only has

one proton.

D.

Each helium atom has two electron energy levels, but each hydrogen atom only has

one electron energy level.

+3

Answers (1)

Know the Answer?

Lazarus · Answer 1

A

Explanation:

Helium is a noble gas meaning its valence shell is full. Because this shell is full, helium does not feel the need to react with anything because it is stable. On the other hand, hydrogen's valence shell is only half full, so it need to donate an electron so that it can become more stable.