Two elements have set of quantum numbers...

Two elements have set of quantum numbers of their last filled subshell of valence shell as follows:
`X to n = 4 , l = 1`
`Y to n = 5 , l = 2`
Then which statement is incorrect?

A

Element Y has greater atomic number than atomic number of element X.

B

Element X has 10 electrons in d subshell.

C

Element X is not a transition element.

D

Atomic size of element Y is equal to the atomic size of element X.

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The correct Answer is:

D

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