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Chemistry
The relationship between first, second and third ionisation enthalpies of each group-13 element is
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Q. The relationship between first, second and third ionisation enthalpies of each group-$13$ element is
The p-Block Elements
A
$\Delta_i H_1>\Delta_i H_2>\Delta_i H_3$
B
$\Delta_i H_1<\Delta_i H_2<\Delta_i H_3$
C
$\Delta_i H_1=\Delta_i H_2>\Delta_i H_3$
D
$\Delta_{ i } H_3>\Delta_{ i } H_1>\Delta_{ i } H_2$
Solution:
The order of ionisation enthalpies, as expected, is
$\Delta_i H_1<\Delta_i H_2<\Delta_i H_3 .$