$[\sigma {(1s)^2}{\sigma ^ * }{(1s)^2}\sigma {(2s)^2}\sigma *{(2s)^2}\pi {(2{p_x})^2}\pi {(2{p_y})^2}$$\sigma {(2{p_z})^2}{\pi ^ * }{(2{p_x})^1}{\pi ^ * }{(2{p_y})^1}]$

No. of pair are $7$ so total no. of paired electrons are $14.$