Electron Configuration and Energy Levels

This video tutorial from Mumu Math and Science provides a basic introduction to electron configuration. It explains how electrons occupy orbitals with lower energies first and describes the s, p, d, and f orbitals. The video includes step-by-step examples of electron configurations for carbon and silicon, detailing how to fill orbitals based on atomic numbers. It also covers how to represent these configurations in a Bohr model. The tutorial emphasizes understanding energy levels and the capacity of each orbital type.

What is the first rule of thumb for electron configuration?

• Electrons fill orbitals based on atomic mass.

• Electrons fill lower energy orbitals first.

• Electrons fill higher energy orbitals first.

• Electrons fill orbitals randomly.

Which orbital can hold up to 10 electrons?

• f orbital

• d orbital

• p orbital

• s orbital

How many electrons can the 'p' orbital hold?

• 8

• 4

• 6

• 2

What is the electron configuration for Carbon at ground state?

• 1s2 2p4

• 1s2 2s2 3p2

• 1s2 2s2 2p2

• 1s2 2s2 2p4

How many electrons are in the second energy level for Carbon?

• 8

• 4

• 2

• 6

What is the atomic number of Silicon?

• 14

• 10

• 18

• 6

How many electrons does Silicon have in its third energy level?

• 2

• 6

• 4

• 8

What is the electron configuration for Silicon at ground state?

• 1s2 2s2 2p6 3s2 3p4

• 1s2 2s2 2p6 3s2 3p2

• 1s2 2s2 3p6 3s2 3p2

• 1s2 2p6 3s2 3p2

How many electrons are in the second energy level for Silicon?

• 8

• 2

• 4

• 6

What is the key message at the end of the video?

• Practice electron configuration daily.

• Always check your calculations.

• Kindness multiplies kindness.

• Review the periodic table regularly.