The electron configuration of elements A, B and C are $[H e] 2 s^{1}, [N e] 3 s^{1}$ and $[A r] 4 s^{1}$ respectively. Which one of the following order is correct for the first ionization potentials $(i n K J m o l^{1})$ of A, B and C?

A > B > C

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C > B > A

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B > C > A

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C > A > C

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Solution

The correct option is A A > B > C
Ionization potential decrease down the group as the attraction over outer electrons decreases. Hence, correct order is $A > B > C$ .

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and

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(A)

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(C)

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Which of the following is the correct order of increasing tendency to gain electron?

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The electron configuration of elements A, B and C are [He]2s1, [Ne]3s1 and [Ar]4s1 respectively. Which one of the following order is correct for the first ionization potentials (in KJ mol1) of A, B and C?

The correct option is A A > B > CIonization potential decrease down the group as the attraction over outer electrons decreases. Hence, correct order is A>B>C.

The electron configuration of elements A, B and C are $[H e] 2 s^{1}, [N e] 3 s^{1}$ and $[A r] 4 s^{1}$ respectively. Which one of the following order is correct for the first ionization potentials $(i n K J m o l^{1})$ of A, B and C?

The correct option is A A > B > C
Ionization potential decrease down the group as the attraction over outer electrons decreases. Hence, correct order is $A > B > C$ .