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Which of the following are not isoelect...

Which of the following are not isoelectronic speices ?

A

`PO_(4)^(3-),SO_(4)^(2-),CIO_(4)^(Theta)`

B

`SO_(3)^(2-),CO_(3)^(2-),NO_(3)^(Theta)`

C

`BO_(3)^(3-),CO_(3)^(2-),NO_(3)^(Theta)`

D

`CN^(Theta),N_(2),C_(2)^(2-)`

Text Solution

Verified by Experts

The correct Answer is:
B

`SO_(3)^(2-) =16 + 8 xx 3 + 2 =42 e^(-)`
` [[PO_(4)^(2-)=15+8xx4+3=50e^(-),],[SO_(4)^(2-)=16+8xx4+2=50e^(-),]]`
`[CIO_(4)^(Theta) = 17 + 8 xx 4 + 1 = 50 e^(-)]`
`[{:(CO_(3)^(2-)=6+8xx3+2=32e^(-),,,,),(BO_(3)^(3-)=5+8xx3+3=32e^(-),,,,),(NO_(3)^(Theta)=7+8xx3+1=32e^(-),,,,):}]`
`[{:(CN^(Theta)=6+7+1=32e^(-),,,,),(N_(2)=7+7=14e^(-),,,,),(C_(2)^(2-)=6+6+2=14e^(-),,,,):}]`
Thus `SO_(3)^(2-), CO_(3)^(2-), NO_(3)^(Theta)` are not isolectronic species .
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