Q.

Which of the following has significant effect on the properties of p-block elements in their absence and presence respectively ?

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a

d and /or f-orbitals in heavier elements and d-orbitals in second period.

b

d-orbitals in second period and d or f-orbitals in heavier elements

c

d-orbitals in second period and f-orbitals in heavier elements

d

f- orbitals in heavier elements and d-orbitals in second period

answer is A.

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Detailed Solution

The general electronic configuration of P-block elements is ns2np1-6

Absence of d-orbitals in case of 2nd period elements differ them from the remaining elements of same group.

As we move down the group, heavier elements consists of d or f-orbitals.

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