A) Beryllium
B) Lithium
C) Hydrogen
D) Helium
Correct Answer: C
Solution :
It is hydrogen \[{{(}_{1}}{{H}^{1}},{{\text{ }}_{1}}{{H}^{2}},{{\text{ }}_{1}}{{H}^{3}})\]You need to login to perform this action.
You will be redirected in
3 sec