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For each question, enter the correct numerical value (in decimal notation, truncated/rounded-off to the second decimal place; e.g. 6.25, 7.00, -0.33, -.30, 30.27, -127.30) using the mouse and the on-screen virtual numeric keypad in the place designated to enter the answer.
Among the species given below, the total number of diamagnetic species is ___
H atom , $$NO_{2}$$ manometer, $${O_{2}}^{-}$$ (superoxide),dimeric sulphur in vapour phase , $$Mn_{3}O_{4}, (NH_{4})_{2}[FeCl_{4}],(NH_{4})_{2}[NiCl_{4}],K_{2}MnO_{4}, K_{2}CrO_{4}$$
Correct Answer: e
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