Question

how does electron gain enthalpy vary in a period​

Answer 1

Explanation:

electron gain enthalpy usually increases along a period and decreases down in a group...

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Answer 2

Answer:

Explanation:Variation in electron gain enthalpy in the period: In the modern periodic table on moving from left to right across a period, the atomic size of elements decreases and the effective nuclear charge increases. ... Hence, electron gain enthalpy becomes more negative while moving right across a period