Among $[N i (C O)_{4},, [N i C l_{4}]^{2 -}, [C o (N H_{2}), C l_{2}] C l, N a_{3} [C o F_{6}], N a_{2} O_{2} and C s O_{2} .]$ the total number of paramagnetic compound is

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Solution

The correct option is B 3

Compound/Ion Magnetic nature of compound

1. $N i (C O)_{4}$ Diamagnetic

2. $[N i C l_{4}]^{2 -}$ Paramagnetic

3. $[C o (N H_{3})_{4} C l_{2}] C l$ Diamagnetic

4. $N a_{3} [C o F_{6}]$ Paramagnetic

5. $N a_{2} O_{2}$ Diamagnetic

6. $C s O_{2}$ Paramagnetic

So total number of paramagnetic compounds is 3.

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Similar questions

Q. Among

[N i (C O)_{4}],

N i C l_{4}]^{2 -}

[C o (N H_{3})_{4} C l_{2}] C l

N a_{3} [C o F_{6}],

N a_{2} O_{2}

and

C s O_{2}

, the total number of paramagnetic compounds is:

Q. Among

[N i (C O)_{4}]

[N i C l_{4}]^{2 -}

[C o (N H_{3})_{4} C l_{2}] C l

N a_{3} [C o F_{6}]

N a_{2} O_{2}

and

C s O_{2}

, the total number of paramagnetic compounds are:

Among $[N i (C o)_{4}], [N i C l_{4}]^{2 -}, [C o (N H_{3})_{4} C l_{2}] C l, N a_{2} [C o F_{6}]^{3 +}, N a_{2} O_{2} a n d C s O_{2},$ the total number of paramagnetic compounds is

Q. (i) Write the IUPAC name of the complex

[C r {(N H_{3})}_{4} {C l}_{2}] C l

.
(ii) What type of isomerism is exhibited by the complex

{[C o {(e n)}_{3}]}^{3 +}

?
(

e n =

ethane-1, 2-diamine)
(iii) Why is

{[N i {C l}_{4}]}^{2 -}

paramagnetic but

[N i {(C O)}_{4}]

is diamagnetic?
(

C r = 24, C o = 27, N i = 28

)

[NiCl₄]²⁻ is paramagnetic while [Ni(CO)₄] is diamagnetic though both are tetrahedral. Why?

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	Compound/Ion	Magnetic nature of compound
1.	$N i (C O)_{4}$	Diamagnetic
2.	$[N i C l_{4}]^{2 -}$	Paramagnetic
3.	$[C o (N H_{3})_{4} C l_{2}] C l$	Diamagnetic
4.	$N a_{3} [C o F_{6}]$	Paramagnetic
5.	$N a_{2} O_{2}$	Diamagnetic
6.	$C s O_{2}$	Paramagnetic

Among [Ni(CO)4,, [NiCl4]2−, [Co(NH2),Cl2]Cl,Na3[CoF6], Na2O2 and CsO2.] the total number of paramagnetic compound is

The correct option is B 3 Compound/Ion Magnetic nature of compound 1. Ni(CO)4 Diamagnetic 2. [NiCl4]2− Paramagnetic 3. [Co(NH3)4Cl2]Cl Diamagnetic 4. Na3[CoF6] Paramagnetic 5. Na2O2 Diamagnetic 6. CsO2 Paramagnetic So total number of paramagnetic compounds is 3.

Among $[N i (C O)_{4},, [N i C l_{4}]^{2 -}, [C o (N H_{2}), C l_{2}] C l, N a_{3} [C o F_{6}], N a_{2} O_{2} and C s O_{2} .]$ the total number of paramagnetic compound is