1
JEE Main 2021 (Online) 20th July Evening Shift
+4
-1
Spin only magnetic moment of an octahedral complex of Fe2+ in the presence of a strong field ligand in BM is :
A
4.89
B
2.82
C
0
D
3.46
2
JEE Main 2021 (Online) 20th July Evening Shift
+4
-1
Which one of the following species doesn't have a magnetic moment of 1.73 BM, (spin only value)?
A
O$$_2^ +$$
B
CuI
C
[Cu(NH3)4]Cl2
D
O$$_2^ -$$
3
JEE Main 2021 (Online) 20th July Morning Shift
+4
-1
According to the valence bond theory the hybridization of central metal atom is dsp2 for which one of the following compounds?
A
$$NiC{l_2}.6{H_2}O$$
B
$${K_2}[Ni{(CN)_4}]$$
C
$$[Ni{(CO)_4}]$$
D
$$N{a_2}[NiC{l_4}]$$
4
JEE Main 2021 (Online) 20th July Morning Shift
+4
-1
The correct order of intensity of colors of the compounds is :
A
$${[Ni{(CN)_4}]^{2 - }} > {[NiC{l_4}]^{2 - }} > {[Ni{({H_2}O)_6}]^{2 + }}$$
B
$${[Ni{({H_2}O)_6}]^{2 + }} > {[NiC{l_4}]^{2 - }} > {[Ni{(CN)_4}]^{2 - }}$$
C
$${[NiC{l_4}]^{2 - }} > {[Ni{({H_2}O)_6}]^{2 + }} > {[Ni{(CN)_4}]^{2 - }}$$
D
$${[NiC{l_4}]^{2 - }} > {[Ni{(CN)_4}]^{2 - }} > {[Ni{({H_2}O)_6}]^{2 + }}$$
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