Which statement is not correct about NO2 ?
(a) Unpaired electron thus paramagnetic thus, (a) is true.
(b) 2NO2N2O4 (dimer) no unpaired electron in N2O4 thus, diamagnetic. Thus, (b) is true.
(c) There is one coordinate bond thus, (c) is true.
(d) No triple bond thus, (d) is not correct.