# What is the formula for the arrangement of electrons in the orbit of an atom?

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What is the formula for the arrangement of electrons in the orbit of an atom?

The formula for the arrangement of electrons in the orbit of each atom is, E =  2n 2 . Here n determines the number of orbits. For example: For

1st orbit, if n = 1, then E =  2n 2  = 2 × (1) 2  =

2 For 2nd orbit, if n = 2, then E =  2n 2  = 2 × (2) 2  = 4

For 3rd orbit, if n = 3, then E =  2n 2  = 2 (3) 2  = 18