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Q.

Observe the following table.

Period IA VA VIIA VIIIA
1^st A B
2^st C D F
3^st E G H
Which of the following is correct regarding electron affinity of elements?

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a

$H > F > G > D$

b

$D > G > C > H$

c

$A > B > C > F$

d

$G > D > C > F$

answer is D.

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Detailed Solution

Element ‘G’ is an halogen family member that is “Cl”.
‘D’ is fluorine, f, element ‘C’ is nitrogen, N and
‘F’ is Neon Ne. we know that half fill or completely filled orbitals of elements have low (or) zero
electron affinity (En). Hence, option ‘4’ is correct.

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Observe the following table. Period IAVAVIIAVIIIA1stA B2st CDF3stE GHWhich of the following is correct regarding electron affinity of elements?