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The first ionization enthalpy of 15th …

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The first ionization enthalpy of 15th group element is higher than 16th group element. Why?

Posted by Yash Surya 7 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Nuke 7 years, 2 months ago

Because 15 group elements have a stable half filled electronic configuration they hardly loose electrons.ie low ionisation enthalpy. But the 16 group elements need to loose only one electron to attain half filled electronic configuration so yhey are ready to loose electrons ie high ionisation enthalpy.

Anjana Sherawat 7 years, 2 months ago

Because of highly stable half field electron configuration

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