Statement 1- F atom has a less negative electron gain enthalpy than Cl atom- Statement 2- Additional electron is repelled more efficiently by 3 p electron in Cl atom than by 2 p electron in F atom-A- Statement 1 is true and statement 2 is falseB- None of the statements are trueC- Both the statements are correct and statement 2 is the correct explanation of statementD- Both the statements are correct and statement 2 is not the correct explanation of statement 1

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Standard XII

Chemistry

Electron Gain Enthalpy

Statement 1: ...

Question

Statement 1: $F$ atom has a less negative electron gain enthalpy than $C l$ atom.
Statement 2: Additional electron is repelled more efficiently by $3 p$ electron in $C l$ atom than by $2 p$ electron in $F$ atom.

Both the statements are correct and statement 2 is the correct explanation of statement 1

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Both the statements are correct and statement 2 is not the correct explanation of statement 1

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Statement 1 is true and statement 2 is false

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None of the statements are true

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Solution

The correct option is C Statement 1 is true and statement 2 is false
The additional electron is repelled more efficiently by $2 p$ electron in $F$ atom than by $3 p$ electron in $C l$ atom due to the smaller size of $F$ atom (there are more inter-electronic repulsions). This is the reason why electron gain enthalpy of $F$ is less negative than that of $C l$ .

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Similar questions

Q. Statement I F -atom has a less negative electron affinity than Cl-atom.
Statement II Additional electrons are repelled more effectively by 3p-electrons in Cl-atom than by 2p-electrons in F-atom.

Q. Statement 1:

F

atom has a less negative electron gain enthalpy than

C l

atom.
Statement 2: Additional electron is repelled more efficiently by

3 p

electron in

C l

atom than by

2 p

electron in

F

atom.

In the following questions two Statement - 1 (Assertion) and Statement - 2 (Reason) are provided. Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct. Mark your responses from the following options:

Statement - 1 : The transition of electrons $n_{3} \to n_{2}$ in H - atom will emit radiation of higher frequency than $n_{4} \to n_{3}$ .

Statement - 2 : Principal shells $n_{2}$ $n_{3}$ have lower energy than $n_{4}$ .

Q. Statement 1: The number of unpaired electrons in the following ions:

M n^{2 +}, C r^{3 +}, V^{3 +}

and

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are 5, 3, 2 and 1 respectively.
Statement 2:

V^{3 +}

has a magnetic moment

(8)^{\frac{1}{2}} B M

Q. Select the correct option for the below statements:
Statement I:

F

- atom has a less negative electron affinity than Cl-atom.
Statement II: Additional electrons are repelled more effectively by

3 p

-electrons in

C l

-atom than by

2 p

-electrons in F-atom.

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Electron Gain Enthalpy

Standard XII Chemistry

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Statement 1: F atom has a less negative electron gain enthalpy than Cl atom. Statement 2: Additional electron is repelled more efficiently by 3p electron in Cl atom than by 2p electron in F atom.

Statement 1: $F$ atom has a less negative electron gain enthalpy than $C l$ atom.
Statement 2: Additional electron is repelled more efficiently by $3 p$ electron in $C l$ atom than by $2 p$ electron in $F$ atom.