Which of the following is isoelectronic of carbon?
Na+
Al3+
O2−
N+
A
Al3+
B
O2−
C
N+
D
Na+
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Solution
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N+ is isoelectronic to C. Both contain 6 electrons out of which 2 are core electrons and 4 are valence electrons. N has 7 electrons. It loses one electron to form N+ with 6 electrons.
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