Question

Q 1. A atom has 2 electrons in k-shell and 4 electrons in l-shell. What is the atomic number ?. Indentify.
Q 2. An atom has 2 electrons in the M-shell . state it's atomic number, electronic configuration , number of protons , valency ,charge of it's ion.

Answer 1

1. atomic no. - 6

2. atomic no. - 12
electronic configuration - 2,8,2
no. of protons - 12
valency - 2 (valency does not have any sign)
charge - 2+ (sign is written after the number for charge)