Question

Define electron gain enthalpy. How it varies in a group and in a period? Why is the electron gain enthalpy of 0 or F is less negative than that of the succeeding element in the group ?



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Answer 1

Answer:

electron gain enthalpy is the tendency to gain electrons. it increases as we move along the period because electronegativity also increases. electron gain enthalpy decrease along the group because atomic size increases and tendency to lose electrons increases.