$\mathop {CH_3^ + }\limits_{\rm{I}} $ $\mathop {{H_3}{O^ + }}\limits_{{\rm{II}}} $ $\mathop {N{H_3}}\limits_{{\rm{III}}} $ $\mathop {CH_3^ - }\limits_{{\rm{IV}}} $
\({H_3}{O^ + } = 3 + 8 - 1 = 10{e^ - },\)
\(N{H_3} = 7 + 3 = 10{e^ - },\) \(CH_3^ - = 6 + 3 + 1 = 10{e^ - }\)
$n$ $l$ $m$ $s$