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Write the period number, group number an...

Write the period number, group number and block of the element having atomic number 42

A

5, 5, d

B

5, 6, d

C

5, 2, d

D

5, 15, p

Text Solution

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The correct Answer is:
B
Mo has atomic number 42 with electronic configuration `[Kr] 5s^(1) 4d^(5)`. It belongs to group 6 in period 5.
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