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Polarisability and Fajan's Rule

why does thet...

Question

why does thethermal stability of hydrides and fluorides decrease down the group when for other salts it increases in accordance with Fajan's rule

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Q. Assertion :Acidic character of group 16 hydrides increases from

H_{2} O

H_{2} T e

. Reason: Thermal stability of hydrides decreases down the group.

Why does bond angle in hydrides decrease on going down the group?

Q. Observe the following statements:

1

. The solubility of group V hydrides in water decreases from

N H_{3}

B i H_{3}

.

2

. Phosphorous does not exhibit allotropy.

3

. The stability of group V hydrides decreases from

N H_{3}

B i H_{3}

The correct statement(s) is/are:

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