The distribution of electrons in energy levels

The video tutorial explains how electrons are distributed across energy levels in an atom using the formula 2n^2. It provides examples with nitrogen and aluminum atoms, detailing their electronic configurations based on their atomic and mass numbers. The nitrogen atom has 7 electrons distributed as 2 in the K level and 5 in the L level. The aluminum atom has 13 electrons, with 2 in the K level, 8 in the L level, and 3 in the M level. This method helps in understanding the electronic configuration of any atom.

What is the formula used to determine the maximum number of electrons in an energy level?

• n^2

• 2n^2

• 2n

• n+2

How many electrons does a nitrogen atom have?

• 2

• 14

• 7

• 5

In the electronic configuration of nitrogen, how many electrons are in the L level?

• 5

• 7

• 3

• 2

What is the atomic number of aluminum?

• 14

• 27

• 13

• 7

How many electrons are in the M level of an aluminum atom?

• 8

• 2

• 5

• 3