NEET UG CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

1 Hard

1 of 1

Application +4 | -1

The 71st electron of an element

X

with an atomic number of 71 enters into the orbital

View answer and explanation

Correct option: C

5d

The correct answer is C (

5d

) because after filling the

4f

orbitals, the 71st electron of element X (Lutetium) enters the

5d

orbital.

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