Of the following sets which does not contain isoelectronic species?

Question

Of the following sets which does not contain isoelectronic species? (A) PO 43-, SO 42-, ClO 4- (B) CN -, N 2, C 22- (C) SO 32-, CO 32-, NO 3- (D) BO 33-, CO 32-, NO 3-

Tardigrade Admin · Accepted Answer

Number of electrons in SO 32-=16+3 × 8+2=42 Number of electrons in CO 32-=6+3 × 8+2=32 Number of electrons in NO 3-=7+3 × 8+1=32

Q. Of the following sets which does not contain isoelectronic species?

$P O_{4}^{3 -}, S O_{4}^{2 -}, Cl O_{4}^{-}$

$C N^{-}, N_{2}, C_{2}^{2 -}$

$S O_{3}^{2 -}, C O_{3}^{2 -}, N O_{3}^{-}$

$B O_{3}^{3 -}, C O_{3}^{2 -}, N O_{3}^{-}$

Number of electrons in $S O_{3}^{2 -} = 16 + 3 \times 8 + 2 = 42$

Number of electrons in $C O_{3}^{2 -} = 6 + 3 \times 8 + 2 = 32$

Number of electrons in $N O_{3}^{-} = 7 + 3 \times 8 + 1 = 32$

Q. Of the following sets which does not contain isoelectronic species?

PO43−​,SO42−​,ClO4−​

CN−,N2​,C22−​

SO32−​,CO32−​,NO3−​

BO33−​,CO32−​,NO3−​

Number of electrons in SO32−​=16+3×8+2=42 Number of electrons in CO32−​=6+3×8+2=32 Number of electrons in NO3−​=7+3×8+1=32

$P O_{4}^{3 -}, S O_{4}^{2 -}, Cl O_{4}^{-}$

$C N^{-}, N_{2}, C_{2}^{2 -}$

$S O_{3}^{2 -}, C O_{3}^{2 -}, N O_{3}^{-}$

$B O_{3}^{3 -}, C O_{3}^{2 -}, N O_{3}^{-}$

Number of electrons in $S O_{3}^{2 -} = 16 + 3 \times 8 + 2 = 42$

Number of electrons in $C O_{3}^{2 -} = 6 + 3 \times 8 + 2 = 32$

Number of electrons in $N O_{3}^{-} = 7 + 3 \times 8 + 1 = 32$