Among the following group which represents the collection of... | Chemistry | SolveeIt

Question

Among the following group which represents the collection of isoelectronic species?

$NO,CN^ - ,N_2, O_2^ -$

$NO^+ , C_2^{2-},O_2^- ,CO$

$N_2,C_2^{2-} ,CO ,NO$

$CO,NO^+ ,CN^- ,C_2^{2-}$

Answer

$CO,NO^+ ,CN^- ,C_2^{2-}$

Explanation

Solution

Species having equal number of electrons are known as isoelectronic species.
Number of electrons,
$\hspace20mm$ In CO = 6 + 8 = 14
$\hspace20mm$ In $NO^+$ = 7 + 8 - 1 = 14
$\hspace20mm$ In $CN^-$ = 6 + 7 + 1 = 14
$\hspace20mm$ In $C_2^{2-}$ = 12 + 2 = 14
Hence, all have 14 electrons, so they are isoelectronic species.

Chemistry Question on Chemical bonding and molecular structure

Solution