The electronic configuration of chlorine is-

Correct option is B

The correct answer is (b) 2, 8, 7
The electronic configuration of chlorine (Cl), which has an atomic number of 17, is 2, 8, 7. This means that:
· The first shell (K shell) contains 2 electrons.
· The second shell (L shell) contains 8 electrons.
· The third shell (M shell) contains 7 electrons.
Chlorine has 17 electrons in total, and these are distributed in the shells according to the principle that each shell can hold a certain maximum number of electrons (2 in the first shell, 8 in the second, and so on).
Information Booster:
· The configuration 2, 8, 7 shows howelectrons fill the shells according to the rules of quantum mechanics.
· Chlorine belongs to Group 17 (halogens) in the periodic table and has 7 valence electrons in its outermost shell.