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JEE Main Chemistry Class 11 Classification of Elements and Periodicity in Properties 2 Questions
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Question : 20
Total: 36
Given below are the two statements: one is labeled as Assertion (A) and the other is labeled as Reason (R).
Assertion (A): There is a considerable increase in covalent radius from
N
to
P
. However from As to Bi only a small increase in covalent radius is observed.
Reason (R): covalent and ionic radii in a particular oxidation state increases down the group.
In the light of the above statement, choose the most appropriate answer from the options given below:
[30-Jan-2024 Shift 1]
(A) is false but (R) is true
Both (A) and (R) are true but (R) is not the correct explanation of (A)
(A) is true but (R) is false
Both (A) and (R) are true and (R) is the correct explanation of (A)
Validate
Solution:
According to NCERT,
Statement-I : Factual data,
Statement-II is true.
But correct explanation is presence of completely filled
d
and
f
-orbitals of heavier members
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