ATOMIC STRUCTURE
3.3 - Arrangement of Electrons
3.3.1 - The Bohr Model
of the Atom
Maximum number of electrons in an energy level
Each energy level of an atom could only accomodate a certain
number of electrons. The maximum number of electrons that can populate a certain
energy level is given by the following formula.
where n = the specific energy level
- The maximum number of electron in the first energy
level (n = 1) is 2 (1)2
= 2 electrons
- The maximum number of electron in the second energy
level (n = 2) is 2 (2)2
= 8 electrons
- The maximum number of electron in the third energy
level (n = 3) is 2 (3)2
= 18 electrons
- The maximum number of electron in the fourth energy
level (n = 4) is 2 (4)2
= 32 electrons
- The maximum number of electron in the fifth energy
level (n = 5) is 2 (5)2
= 50 electrons
- The maximum number of electron in the sixth energy
level (n = 6) is 2 (6)2
= 72 electrons
- The maximum number of electron in the seventh energy
level (n = 7) is 2 (7)2
= 98 electrons
