1s22s22p63s23p64s2 electron configuration?

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  • The name of element with electron configuration 1s22s22p63s23p64s2 is Calcium.
  • The atomic number of Calcium is 20. It belongs to group number 2 and has a period number 4.
  • The shorthand electron configuration for Calcium is [Ar] 4s2.

Explanation –

  • The given electron configuration is 1s22s22p63s23p64s2
  • Adding up all the electrons from the given configuration will give → (2 + 2 + 6 +  2 + 6 + 2) = 20 electrons.

Note – For a neutral atom, the number of electrons is equal to the atomic number of the element.

  • So, for a total of 20 electrons, the atomic number is also 20. 
  • And we know the atomic number 20 belongs to the Calcium in the periodic table.
  • Therefore, the Calcium element has 1s22s22p63s23p64s2electron configuration.
NameCalcium (Ca)
The electron configuration of Calcium1s22s22p63s23p64s2
Noble gas configuration

[Ar] 4s2

Number of valence electrons in Calcium2
Number of electrons per shell[2, 8, 8, 2]

1s22s22p63s23p64s2 electron configuration (calcium)

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