ChemistryQ1–1 of 1 questions
Page 1 of 1 · English
1
ChemistryEasyMCQIIT JEE · 1975
The number of electrons in the valence shell of calcium is
A
$6$
B
$8$
C
$2$
D
$4$
Solution
(C) The atomic number of calcium $(Ca)$ is $20$.
The electronic configuration of calcium is $1s^2 2s^2 2p^6 3s^2 3p^6 4s^2$ or $(2, 8, 8, 2)$.
The valence shell is the outermost shell,which is the $4^{th}$ shell.
There are $2$ electrons in the $4s$ orbital of the valence shell.
The electronic configuration of calcium is $1s^2 2s^2 2p^6 3s^2 3p^6 4s^2$ or $(2, 8, 8, 2)$.
The valence shell is the outermost shell,which is the $4^{th}$ shell.
There are $2$ electrons in the $4s$ orbital of the valence shell.
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