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Polarisability and Fajan's Rule

why does thet...

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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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