Electronic configuration of calcium atom can be written as | Chemistry | SolveeIt

Question

Electronic configuration of calcium atom can be written as

$[Ne] 4p^2$

$[Ar] 4s^2$

$[Ne] 4s^2$

$[Kr] 4P^2$

Answer

$[Ar] 4s^2$

Explanation

Solution

To write the electronic configuration of an atom, it is better if w e remember the atomic number of noble gases and the orbitals follow the noble gas. The atomic number of Ca is 20 and its nearest noble gas is argon (Ar = 18). Hence, the electronic configuration of Ca = [Ar] $4s^2$

Chemistry Question on Structure of atom

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