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Which of the following order are correct...

Which of the following order are correct as per the properties mentioned against each ?

A

`SiO_(2) lt As_(2)O_(3) lt P_(2)O_(3) lt SO_(2)" "` Acid strength

B

`AsH_(3) lt PH_(3) lt NH_(3)" "` Enthalpy of vapourisation

C

`S lt O lt Cl lt F" "` More negative electron gain enthalpy

D

`H_(2)O gt H_(2)S gt H_(2)Se gt H_(2)Te" "` Thermal stability

Text Solution

Verified by Experts

The correct Answer is:
A, D
Acid strength increases in the order : `SiO_(2) lt As_(2)O_(3) lt P_(2)O_(3) lt SO_(2)` and thermal stability decreases in the order : `H_(2)O gt H_(2)S gt H_(2)Se gt H_(2)Te.
Thus, optio (a) and (d) are correct.
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