Question

Write the electronic configuration of an element whose atomic number is 12.​

Answer 1

Explanation:

the element is magnesium.

Mg (12) - 2,8,2

Answer 2

Answer:

The electronic configuration of element having atomic no. 12 is 1s² 2s² 2p6 3s².

Explanation:-

Given,

Element having atomic no. 12 is Magnesium. The symbol of magnesium is Mg. The electronic configuration of Magnesium(Mg) is :-

1s² 2s² 2p6 3s²

As s-orbital has the capacity to hold only 2electrons and p- orbital has the capacity to hold only 6 electrons.

s-orbital contains only one subshell and have 2 electrons.

p-orbital contains only three subshells,each subshell having 2 electrons and in total 6 electrons.

Electronic configuration:-

It is the distribution of electrons into different shells, subshells and orbitals in an atom.There are 3 rules which help in filling of electrons in writing the electronic configuration of different atoms:-

Aufbau principle

Pauli's exclusion principle

Hund's rule of maximum multiplicity

For more references:-

https://brainly.in/question/1377912?

https://brainly.in/question/685234?

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