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Formation of Bases

The ionic com...

Question

The ionic compound $C a (O H)_{2}$ on dissociation will give cation X. The charge on this on cation is ___.

A

1

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B

2

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C

3

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D

4

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Solution

The correct option is B 2
The dissociation reaction is given as: $C a (O H)_{2} (a q) ⟶ C a^{2 +} + 2 O H^{-}$ So, the cation is $C a^{2 +}$ and anion is $O H^{-}$ .

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Q. The ionic compound

C a (O H)_{2}

on dissociation will give cation X. The charge on this cation is ___.

In a chemical formula of a diatomic ionic compound, the charge on the anion is -3. Find out the charge on the cation.

Q. The properties of most of the ionic solids deviate from their ideal ionic character because the lattice undergoes some distortion. Cations are usually smaller than anions and have a higher effective nuclear charge. The outer electron cloud in a cation is more firmly held than in an anion. The loose electron cloud of an anion, when attracted by the electron cloud of a cation, gets distorted. This phenomenon is known as polarization. Due to this phenomenon, the electron cloud of an anion shifts towards the cation which decreases both the magnitude of positive charge on the cation and the negative charge on the anion. In other words, covalent character develops in the ionic bond.

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