Number of geometrical isomers or stereoisomers of a given complex

1. A.
   $\left\lbrack {CoCl}_{2}(en)_{2} \right\rbrack$
2. B.
   $\left\lbrack Co(CN)_{5}(NC) \right\rbrack^{3 -}$
3. C.
   $\left\lbrack Co\left( {NH}_{3} \right)_{3}\left( {NO}_{2} \right)_{3} \right\rbrack$
4. D.
   $\left\lbrack Co\left( {NH}_{3} \right)_{4}{Cl}_{2} \right\rbrack^{+}$

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1. A.
   2
2. B.
   3
3. C.
   1
4. D.
   4

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1. A.
   4
2. B.
   0
3. C.
   2
4. D.
   3

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1. A.
   Both (A) and (R) are correct and (R) is the correct explanation of (A).
2. B.
   (A) is correct but (R) is not correct.
3. C.
   (A) is not correct but (R) is correct.
4. D.
   Both (A) and (R) are correct but (R) is not the correct explanation of (A).

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1. A.
   $3\& 3$
2. B.
   $2\& 2$
3. C.
   $2\& 3$
4. D.
   $1\& 2$

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