Question

Which element has more negative electron gain entalpy boring or aluminum

Answer 1

Chlorine

ChlorineChlorine has the most negative electron gain enthalpy.

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Answer 2

Answer:

Among the elements B, Al, C and Si, the element having most negative electron gain enthalpy is C.

On moving from left to right in a period, the electron affinity increases as Z

eff

increases and size decreases.

Hence, E.A

C

>E.A

B

.

On moving down the group, the electron affinity decreases as Z

eff

decreases and size increases.

Hence, E.A

C

>E.A

Si

.