MHT CET 2023 Chemistry question

Chemistry Classification of Elements and Periodicity in Properties MHT CET 2023

Which from following is a correct decreasing order of ionization enthalpy for different elements?

(A)Ar > Ne > S >Cl
(B)Ne > Ar > Cl > SCorrect
(C)Ne > S > Cl > Ar
(D)Cl > S > Ne >Ar

Answer: (B)

Solution

Ionization enthalpy increases across a period and decreases down a group. Neon (period 2, noble gas) has the highest value (2081 kJ/mol), being the smallest atom with a stable octet, so Ne > Ar. Ar (1521 kJ/mol) is a noble gas and

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Question ID VK-097871