How many maximum electrons can be filled in the third orbit of an atom

1.	How many maximum electrons can be filled in the third orbit of an atom
Answer» THIRD orbit can contain 18 electrons.. 9 orbitals of d,p and s d has 5 orbitals p has 3 orbitals s has 1 ORBITAL So total number of orbitals is 9 Each orbital can ACCOMMODATE 2 electrons So no of electrons is 9*2=18

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