Question

What is principal quantum number give short answer?

Answer 1

Answer:

Hope it helps you.

Explanation:

The principal quantum number tells us which principal electron shells the electrons occupy. For example, the electron configuration of helium (He), is 1s^2 - the principal quantum number is the number '1'. This means the two electrons of helium occupy the first principal electron shell

Answer 2

and 3 is a right answer

4 is a right answer