Question

A. What is an atom's electron configuration?

Answer 1

Answer:

It is the distributions of electron on the three levels

Explanation:

The three levels are : K . L . M . N

Answer 2

Electron configuration is the amount of electrons in each shell and how many shells so say like if the atomic number was 15 the max in first shell is 2 then 2nd is 8 and there is 5 left. So it would e 2,8,5