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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Analyzing +4 | -1

Electronic configurations of four elements A, B,

\mathrm{C}

and

\mathrm{D}

are given below :

(i)

1 s^2 2 s^2 2 p^6

(ii)

1 s^2 2 s^2 2 p^4

(iii)

1 s^2 2 s^2 2 p^6 3 s^1

(iv)

1 s^2 2 s^2 2 p^5

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

View answer and explanation

Correct option: A

(i)

<

(iii)

<

(ii)

<

(iv)

Option A ((i) < (iii) < (ii) < (iv)) is correct because the electron gain enthalpy increases as the effective nuclear charge increases and noble gases have the least tendency to gain electrons.

JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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