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Which of the following orders are correc...

Which of the following orders are correct for property indicated in brackets ? .

A

`NH_(3)gtNF_(3)gtBF_(3)` (dipole moment)

B

`CI gt S gt O gt N` (electron affinity)

C

`Si gt Mg gt A1 gt Na` (first ionisation enthalpy)

D

`HCIO_(4) gt HBrO_(4) gt HIO_(4)(pK_(a) "values")`

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
All are correct and all conceptual statements
(d) is wrong Correct order for `pK_(a)` value is
`HIO_(4) gt HBrO_(4) gt HCIO_(4)`
Acidic strenght `HCIO_(4) gt HBrO_(4) gt HIO_(4)` weaker the acid higher is its `pK_(a)` value .
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