MCQ
Electronic configuration of magnesium is:
- A2, 8, 2
- B2, 8, 1
- C2, 8, 7
- D2, 1
✓
Answer
- 2, 8, 2
Explanation:
Magnesium has atomic number 12. It will be distributed in K, L, M shell in the following way:
K shell can accommodate a maximum of 2 electrons.
L shell can accommodate a maximum of 8 electrons and M shell will accommodate 2 electrons.
So the configuration becomes 2, 8, 2.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
In which of the following structures, the anion has maximum coordination number ?
An ion which has $18$ electrons in the outermost shell is
→Maximum bond angle is present in :-
The structure of which of the following chloro species can be explained on the basis of $dsp^2$ hybridization ?
→In which of the following hydration energy is higher than lattice energy?
The property which regularly increases down the group in the periodic table is:
Quantum No. $l = 2$ and $m = 0$ represent which orbital :
→The plots of radial distribution functions for various orbitals of hydrogen atom against $'r ^{\prime}$ are given below
→${image}$
The correct plot for $3\, s$ orbital is
Which of the following compounds is not matched correctly with its structure ?
The number of electrons in the valence shell of calcium is