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Q.

In the long form of the periodic table, the number of groups under p and d blocks are

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a

2, 6

b

6, 10

c

10, 6

d

6, 8

answer is B.

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Detailed Solution

Actually in the periodic table p subshell contains total 3 orbitals (Px, Py, Pz ) and each orbital can accommodate for 2 electrons. Hence, there are total 6 groups under p subshell. In similar way d subshell has total 5 orbitals and it can accommodate for 10 electrons. It means under d subshell total 10 groups are present. Therefore, number of groups under p and d blocks are 6, 10 respectively.

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