Accelerate NEET 2020 : Coordination Compound Class -03 (21.08.2019)

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Question 1

The d-electron configuration of Cr²⁺, Mn²⁺, Fe²⁺, and Ni²⁺ are 3d⁴, 3d⁵, 3d⁶, and 3d⁸ respectively. Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour ?

• A[Mn(H₂O)₆]²⁺
• B[Fe)H₂O)₆]²⁺
• C[Ni(H₂O)₆]²⁺
• D[Cr(H₂O)₆]²⁺

Question 2

Co-ordination number of Ni in is:

• A3
• B6
• C4
• D2

Question 3

Which of the following will exhibit maximum ionic conductivity?

• A
• B
• C
• D

Question 4

Type of isomerism which exists between and is :

• ALinkage isomerism
• BCoordination isomerism
• Clonisation isomerism
• DSolvate isomerism

Question 5

The correct combination is :

• A[Ni(CN)₄]²⁻—tetrahedral ; [Ni(CO)₄]—paramagnetic
• B[NiCl₄]²⁻—paramagnetic ; [Ni(CO)₄]—tetrahedral
• C[NiCl₄]²⁻—square-planar ; [Ni(CN)₄]²⁻—paramagnetic
• D[NiCl₄]²⁻—diamagnetic ; [Ni(CO)₄]—square-planar

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