Question

there are four atoms A,B,C and D with atomic numbers 9,11,13,15 respectively. The atom containing less than 8 electrons in the second L - shells is

explain this question briefly
then i will keep that answer as a brainliest answer.
and take from me 15 points​

Answer 1

Answer:

a is the correct answer

Explanation:

a contains less than 8 shells of k l m and n k consists of 2 l consists of 8 and configuration of A is 2,7 7 is less than 8