Question

OL
If the subshell wise electronic configuration of an atom is 1s2
2s2 2p6 3s2, find answers to the following:
How many shells are present in this atoms
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Answer 1

Answer:

3 shells are present as n= 3

the element is mg

Answer 2

Step by step explanation

• 3 shells are present in the atom.
• Total 12 electrons are present, so it is the magnesium element.