Online NMDCAT Chemistry Preparation (MCQ-based Lectures + Practice Tests)

MCQ 31
The electronic configuration of magnesium is given below 12Mg= 1s2 2s2 2p6 3s2 Maximum number of electron in p-orbital magnesium are
A. 2
B. 4
C. 6
D. 8

Answer: A

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MCQ 32
The correct set of quantum number for valance electron of Na is
A. n = 3 l= 2 m=0 S = +1/2
B. n = 3 l=0 m=0 S=+1/2
C. n=3 l=2 m=0 S = -1/2
D. n = 3 l=2 m = +1 S = +1/2

Answer: B

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MCQ 33
The electronic configuration of which element can be written without Hund’s rule
A. C
B. N
C. O
D. F

Answer: D

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MCQ 34
Minimum number of electrons in N-shell are
A. 22 Ti
B. 23V
C. 24 Cr
D. 25Mn

Answer: C

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MCQ 35
Electron will be placed first in
A. 7s
B. 6p
C. 5d
D. 4f

Answer: D

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This Post Has 6 Comments

    1. Hifsa Pervez October 1, 2022 Reply

      Shapes of orbitals were explained by magnetic or azimuthal quantum number? Answer below the question is given magnetic quantum number but in the explanation video of this question answer is given azimuthal quantum number.

      1. Umair Ali khan October 5, 2022 Reply

        Azimuthal. The discussion has correct answers. Please mention the question number, therefore, it is corrected.

  2. Haseeb UR Rehman July 26, 2022 Reply

    In ethanol and methanol, which has greater hydrogen bonding?

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