Answer:
I think its D
Explanation:
.........................
I think the answer is : 1
9.9%
|Approximate Value − Exact Value| divided by
|Exact Value| X 100
8.4 grams. I think but I’m not 100% sure
Answer:
Electrons in a hydrogen atom must be in one of the allowed energy levels. If an electron is in the first energy level, it must have exactly -13.6 eV of energy.
...
Energy Levels of Electrons.
Energy Level Energy
1 -13.6 eV
2 -3.4 eV
3 -1.51 eV
4 -.85 eV
