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Introduction to d and f Block Elements

Ammonia will ...

Question

Ammonia will not form complex with:

A

{A g}^{2 +}

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B

{P b}^{2 +}

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C

{C u}^{2 +}

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D

{C d}^{2 +}

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Solution

The correct option is B ${P b}^{2 +}$
Generally d-block elements form complex and lead is p-block element.

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Similar questions

State True or False.

C u^{2 +}

C d^{2 +}

ions react with KCN to form complex.

Q. Ammonia will not form complex ions with

C u^{2 +}

C d^{2 +}

both are present, it is difficult to analyse. A scheme to analyse in a mixture is given below.
KCN forms complex with

C u^{2 +}

C d^{2 +}

C u^{2 +} + 2 C N^{-} ⟶ C u (C N)_{2}

C u (C N)_{2} ⟶ 2 C u C N ↓ + (C N)_{2}

C u C N + 3 K C N K_{3} C u (C N)_{4}] s t a b l e C d^{2 +} + K C N ⟶ K_{2} [C d (C N)_{4}] u n s t a b l e

H_{2} S

gas is passed, unstable complex of

C d^{2 +}

gives yellow ppt

[C d (C N)_{4}]^{2 -} ⇌ C d^{2 +} + 4 C N^{-}

C d^{2 +} + S^{2 -} ⟶ C d S y e l l o w ↓

If true enter 1, else enter 0.

State whether the following statement is true or false:

C u^{2 +}

C d^{2 +}

both form soluble complex with

C N^{-}

but are decomposed by

H_{2} S

Q. In the separation of

C u^{2 +}

C d^{2 +}

in 2nd group of qualitative analysis of eations, tetrammine copper(ll) sulphate and tetraammine cadmium(ll) sulphate react with

K C N

to form the corresponding cyanide complexes; which one of the following pairs of the complexes and their relative stabilities enables the separation of

C u^{2 +}

C d^{2 +}

?

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