Which of the following are isoelectronic species \[I=CH_{3}^{+},\,II-N{{H}_{2}},\,III-NH_{4}^{+},\,IV-N{{H}_{3}}\] [CPMT 1999]

Which of the following are isoelectronic species \[I=CH_{3}^{+},\,II-N

1.	Which of the following are isoelectronic species \[I=CH_{3}^{+},\,II-N{{H}_{2}},\,III-NH_{4}^{+},\,IV-N{{H}_{3}}\] [CPMT 1999]
A.	I, II, III
B.	II, III, IV
C.	I, II, IV
D.	I and II
Answer» C. I, II, IV

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Which of the following are isoelectronic species \[I=CH_{3}^{+},\,II-N{{H}_{2}},\,III-NH_{4}^{+},\,IV-N{{H}_{3}}\] [CPMT 1999]

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