مستويات الطاقة

The video tutorial explains the concept of electron configuration in atoms, focusing on how electrons are distributed across different energy levels according to the formula 2n². It uses nitrogen and aluminum as examples to demonstrate the process of determining electron distribution based on atomic and mass numbers. The tutorial provides a step-by-step guide to understanding how electrons fill the energy levels, ensuring a clear understanding of the topic.

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

• n^3

• 2n^2

• 2n

• n^2

How many electrons does the first energy level hold in a nitrogen atom?

• 2

• 7

• 1

• 5

What is the atomic number of nitrogen?

• 2

• 14

• 7

• 5

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

• 3

• 2

• 11

• 8

What is the total number of electrons in an aluminum atom?

• 13

• 14

• 27

• 8