6. The oxidation state of central metal
ion in [CO(NO2)6]-3:
O A) +3
OB) - 3
O C) +2
O D) Zero
Answers
Answer:
In simple ions, the oxidation number of the atom is the charge on the ion. For example, Na+, K+, and H+ all have oxidation numbers of +1. O2- and S2- have oxidation numbers of -2. In a molecule or compound, the oxidation number is the sum of the oxidation numbers of its constituent atoms.
Explanation:
(A) is Mn(NO
3
)
2
Mn(NO
3
)
2
+(K
2
CO
3
+KNO
3
)⟶
Greencolour(B)
K
2
MnO
4
(B)
K
2
MnO
4
⟶
H
+
Pinksolution(C)
KMnO
4
(A)
Mn(NO
3
)
2
+4NaOH+Br
2
⟶2NaBr+
(D)
MnO
2
+2NaNO
3
+2H
2
O
MnO
2
+PbO
2
+HNO
3
⟶
Pink(E)
HMnO
4
+Pb(NO
3
)
2
+2H
2
O
Mn(NO
3
)
2
+BaCl
2
⟶Ba(NO
3
)
2
+
(F)
MnCL
2
Oxidation state of A:Mn(NO
3
)
2
⟶+2
Oxidation state of B:K
2
MnO
4
⟶+6
Oxidation state of C:KMnO
4
⟶+7
The oxidation state of central metal ion in [Co(NO2)6]-3 is : A) +3
- The name of the above coordination compound
( [Co(NO2)6]-3) is hexanitritocobaltate (III) ion .
- Oxidation state is known as oxidation number which describes the degree of oxidation of an atom in a chemical compound. It's value always shown by + or - sign.
- The oxidation state on the central metal ion i.e on Co can be find out by following method.
- In [CO(NO2)6]-3 , we know that the valency of 1 NO2 is -1 , so for the 6 NO2 it will become -6 .
- Let the oxidation state of Co is X .
- So for, [Co(NO2)6]-3
=> X + 6*(-1) = -3
=> X = -3+6 = +3.
- So, the oxidation state of the central metal ion in [Co(NO2)6]-3 is +3.
So, the oxidation state of the central metal ion in [Co(NO2)6]-3 is +3.