Q.

Assertion : The increase in atomic radius from Arsenic to Bismuth is small.
Reason : Presence of completely filled d-orbitals and f-orbitals in heavier elements

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a

(A) is true but (R) is false

b

Both (A) and (R) are true but (R) is not the correct explanation of (A)

c

Both (A) and (R) are true and (R) is the correct explanation of (A)

d

Both (A) and (R) are false

answer is A.

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Detailed Solution

d-orbitals and f-orbitals have poor shielding effect 

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