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Which of the following sets contain only...

Which of the following sets contain only isoelectronic species?

A

`K^(o+), Ca^(2+), Sc^(3+), Cl^(ɵ)`

B

`Zn^(2+), Ca^(2+), Ga^(3+), Al^(3+)`

C

`Ti^(4+), Ar, Cr^(6+), V^(5+)`

D

`P^(3-), S^(2-), Cl^(ɵ), K^(o+)`

Text Solution

Verified by Experts

The correct Answer is:
A, C, D

a. `K^(o+)(19+1=18e^-), Ca^(2+)(20-2=18e^(-)), Sc^(3)(21-3=18e^(-)), Cl^(ɵ)(17+1=18e^(-))`
Hence isoelectronic.
b. Not isoelectronic `Zn^(+)(30-2=28r^(-),Ca^(2+)(20-2=18e^(-)),Ga^(3+)(31-3=28e^(-)),Al^(3+)(13-3=10e^(-))`
c. Isoelectronic: `Ti^(4+)(22-4=18e^(-)),Ar(Z=18e^(-))`,
`Cr^(6+)(24-6=18e^(-)),V^(5+)(23-5=18e^(-))`
d. Isoelectronic: `p^(3-)(15+3=18e^(-)),S^(2-)(16+2=18e^(-))`,
`Cl^(ɵ)(17+1=18e^(-)),K^(o+)(19-1=18e^(-))`
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