Question

first and second ionization enthalpy of group 15 and 16 elements
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Answer 1

Group 16 elements have a lower value of first ionization enthalpy as compared to group 15 elements. As group 15 elements have half filled p-orbital due to which group 15 have got extra stability.

Answer 2

Answer:

group 15 elements have extra stable half filled p orbital electronic configuration so it needs more energy to remove the outermost electron compared to group 16

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