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Standard XII

Chemistry

Electron Gain Enthalpy

Which of the ...

Question

Which of the following element is expected to have highest electron gain enthalpy?

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{5}

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1 s^{2} 2 s^{2} 2 p^{3}

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1 s^{2} 2 s^{2} 2 p^{4}

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1 s^{2} 2 s^{2} 2 p^{6}

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Solution

The correct option is A $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{5}$
Electron gain enthalpy is defined as the amount of energy released when an electron is added to an isolated gaseous atom.
Among the given options,option A is having highest electron gain enthalpy as the outer shell has $3 s^{2} 3 p^{5}$ configuration and on adding an electron $3 p^{5}$ becomes $3 p^{6}$ which is full filled stable configuration and thus the energy released will be more.
Hence option A is correct answer.

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Similar questions

Q. The electronic configuration of some neutral atoms are given below

(1)

1 s^{2} 2 s^{1}

(2)

1 s^{2} 2 s^{2} 2 p^{3}

(3)

1 s^{2} 2 s^{2} 2 p^{4}

(4)

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1}

In which of these electronic configuration would you expect to have highest
(i)

I E_{1}

(ii)

I E_{2}

Q. Electronic configurations of four elements

A, B, C

and

D

are given below:
(A)

1 s^{2} 2 s^{2} 2 p^{6}

(B)

1 s^{2} 2 s^{2} 2 p^{4}

(C)

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1}

(D)

1 s^{2} 2 s^{2} 2 p^{5}

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

Q. Which of the following element has highest electron-gain enthalpy?

Electronic configuration of four elements A, B, C, and D are given below
A. $1 s^{2} 2 s^{2} 2 p^{6}$ B. $1 s^{2} 2 s^{2} 2 p^{4}$ C. $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1}$
D. $1 s^{2} 2 s^{2} 2 p^{5}$
Whilch of the following is the correct order of increasing tendency to gain electron?
(a) A < C <B <D (b) A < B < C < D (c) D <B < C < A (d) D < A < B <C

Q. The increasing order of electron affinity of the electronic configurations of element is:
(I)

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{5}

(II)

1 s^{2} 2 s^{2} 2 p^{3}

(III)

1 s^{2} 2 s^{2} 2 p^{5}

(IV)

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1}

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