Maximum Electron Capacity of the Main Energy Level The maximum number of electrons in the

main energy level is determined by the formula

2n2 where n is an integer that designates each

energy level. For the first main energy level (K),

n=1; in the second main energy level (L), n=2, in

the third energy level, n= 3 and so on. Each main

energy level contains sublevels and each

sublevel has a fixed number of atomic orbitals.

For the s sublevel, there is only one atomic

orbital, p sublevel has three atomic orbitals and

d has 5 atomic orbitals. Ex. In Main energy level

1 (K), n=1

Using the formula 2n2

, the number of electrons

occupying energy level 1 is 2. Since there are 2

electrons in the first energy level, it means there

is only one sublevel named s with one atomic

orbital and that is the s orbital. How many

sublevels and atomic orbitals are there in the

next energy levels? Study the table below and

supply the missing data. Complete the table below
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