Correct option is B
The correct answer is (b) 2, 8, 7.
Chlorine (Cl) has an atomic number of 17, which means it has 17 electrons.
The electronic configuration follows the pattern of filling the electron shells in order:
First shell (K-shell) can hold 2 electrons.
Second shell (L-shell) can hold 8 electrons.
Third shell (M-shell) will hold the remaining 7 electrons.
Thus, the electronic configuration of chlorine is 2, 8, 7.
Information Booster:
The valence electrons (electrons in the outermost shell) of chlorine are 7, making it highly reactive and eager to gain one electron to achieve a stable configuration (like the nearest noble gas, argon).
