Write the electronic configuration of chlorine atom (atomic no. = 17, mass no. = 35).

Explanation

Atomic number of chlorine (Cl) = 17 For neutral atom, Number of proton = Number of electron 1st shell (K-shell) can accommodate maximum 2 electrons. 2nd shell (L-shell) can accommodate maximum 8 electrons. The remaining 7 electrons will enter into 3rd shell (M-shell). Hence, the electronic configuration

Of chlorine atom will be ` {:(K,L,M),(2,8,7):}`