1s22s22p63s23p64s2 electron configuration?

• 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.

Also check –

• Calcium electron configuration, orbital diagram, valence electrons
• How to write electron configuration for any elements?
• Electron configuration calculator
• Noble gas electron configuration calculator
• Ion electron configuration calculator