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Q.

If the electron gain enthalpy of element X, Y and Z is respectively – 1.46, - 3.40 and – 3.61 K joule/mole then which of the following option is true?

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a

X=N,Y=Cl,Z=F

b

X=O,Y=F,Z=Cl

c

X=F,Y=Cl,Z=Br

d

X=Li,Y=Be,Z=B

answer is B.

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Detailed Solution

Across the period from left to right electron gain enthalpy increasesChlorine is having more electron gain enthalpy than flourine O
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