4. Chemical bonding and molecular structure — Chemistry STD 11 Science — Question

${O_2} = \sigma {(1s)^2}{\sigma ^ * }{(1s)^2}\sigma {(2s)^2}{\sigma ^ * }{(2s)^2}\sigma {(2{p_x})^2}\pi {(2{p_y})^2}$

$\pi {(2{p_z})^2}{\pi ^ * }{(2{p_y})^1}{\pi ^ * }{(2{p_z})^1}$

The molecule has two unpaired electrons So, it is paramagnetic