Electronic configuration of calcium 20

Definition of electronic configuration
the distribution or arrangements of electrons around the nucleus into orbit or shell is called electronic configuration

what is calcium
it is an element of the periodic table
symbol            Ca

calcium is an alkali metal element

Electronic configuration of calcium
Electronic configuration of calcium

atomic number of calcium is 20
it means that number of protons 20
as you know that the number of electrons and protons is equal
20 protons = 20 electrons
calcium has 4 shell because it belongs to 4th period
k = 2  L = 8, M = 8, N = 2
calcium belongs to s-blocks element
electronic configuration of calcium is   1s²,2s²,2p⁶,3s²,3p⁶,3s²

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