Periodic Classification and Periodic Properties 2 Question 34
Assertion and Reason
Read the following questions and answer as per the direction given below :
(a) Statement I is true; Statement II is true; Statement II is the correct explanation of Statement I.
(b) Statement I is true; Statement II is true; Statement II is not the correct explanation of Statement I.
(c) Statement I is true; Statement II is false.
(d) Statement I is false; Statement II is true.
34.
Statement I: F-atom has a less negative electron affinity than $\mathrm{Cl}$-atom.
Statement II: Additional electrons are repelled more effectively by $3 p$-electrons in $\mathrm{Cl}$-atom than by $2 p$-electrons in F-atom.
(1998, 2M)
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Answer:
Correct Answer: 34. (c)
Solution:
- Statement I is true; Statement II is false. $\mathrm{F}$ atom has slightly lower affinity for the electron than chlorine. It is due to the reason that additional electrons are repelled more effectively by $2 p$-electrons in $\mathrm{F}$ than by $3 p$-electrons in $\mathrm{Cl}$-atom.
BETA
