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3. Classification of elements and periodicity in properties — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
If an atom has electronic configuration $1s^22s^22p^63s^23p^63d^34s^2$, it will be placed in :-
  • A
    Second group
  • B
    Third group
  • ✓
    Fifth group
  • D
    Sixth group
✓

Answer

Correct option: C.
Fifth group
c
The outermost shell and one shell prior to it in d subshell, has total 5 electron so it will be placed in fifth group in transition element or 'd' block of periodic table.

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