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explain the electron gain enthalpy for some 3rd period atoms-P,S,Cl are more negative than 2nd period elements-N,O,F.

Posted by Manpreet Gill 6 years, 7 months ago

CBSE > Class 11 > Chemistry

3 answers

Pranav Gupta 6 years, 7 months ago

Energy is directly proportional to Z^2 / n^2. This ratio is greater in 3rd period atoms than 2nd period atoms.

Shubhi . 6 years, 7 months ago

The elements of the second period have smalleat atomic size among the element in their respective group. As a result there are considerable electron - electron replusion within the atom itself and hence the additional electron is not a accepted with the same ease as is the case with the reamaing element

Shubhi . 6 years, 7 months ago

Can u plz describe your question

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