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The relation between first, second and t...

The relation between first, second and third ionisation enthalpies of each group-13 element is

A

`Delta_lH_1gtDelta_lH_2 gt Delta_lH_3`

B

`Delta_lH_1ltDelta_lH_2 lt Delta_lH_3`

C

`Delta_lH_1=Delta_lH_2=Delta_lH_3`

D

`Delta_lH_3ltDelta_lH_1lt Delta_lH_2`

Text Solution

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The correct Answer is:
B
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