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Element P has 5 electrons in its L shell...

Element P has 5 electrons in its L shell while Q element has 5 electrons in its M shell. Which of the following statements is correct regarding elements P and Q?

A

Both elements have valency equal to 5 only.

B

Both elements have the same mass number.

C

Atomic number of element P is 7 and that of element Q is 15.

D

Both elements show valency equal to 3 only.

Text Solution

Verified by Experts

The correct Answer is:
C
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