221k views
2 votes
Explain why helium (He) is stable (unreactive), but hydrogen (H) is unstable (reactive)

1 Answer

3 votes

Answer:

Helium is stable because it has 1 shell and the first shell can only have 2 electrons. Hydrogen is unstable because it has 1 shell but only 1 electron.

Related questions

2 answers
4 votes
123k views
asked Jan 25, 2021 22.8k views
Feng Yu asked Jan 25, 2021
by Feng Yu
8.2k points
1 answer
1 vote
22.8k views