KO ₂ exhibits paramagnetic behaviour. This is due to the paramagnetic nature of

Step-by-step solution

In KO ₂ , oxygen exists as O ₂⁻ ion. Its molecular orbital electronic configuration is as follows aligned O ₂⁻ & = 1 s^2, 1 s^2, 2 s^2, 2 s^2, 2 P_z^2 2 p_x^2 & ^2 p_y^2, 2 p^2 _x 2 p⁻¹ y aligned Due to presence of 1 unpaired electron in anti bonding molecular orbital, it is paramagnetic inbehaviour.