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Which of the following will have the most negative electron gain enthalpy

Posted by Ka If 3 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Yogita Ingle 3 years, 11 months ago

Electron gain enthalpy generally becomes more negative across a period as we move from the left to the right. Within a group,m electron gain entahlpy becomes less negative down a group. However, adding an electron to the 2p2p-orbital leads to the greater repulsion than adding an electron to the larger 3p3p-orbital. Hence, the element with the most negative electron gain enthalpy is chlorine, and the one with the least negative electron gain enthalpy is phosphorus.

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