Electron Configurations and Shells

This video tutorial from Moomoomath and Science explains the electron configurations of noble gases, including helium, neon, argon, krypton, xenon, and radon. It details the number of electrons in each shell for these elements, using noble gas configurations. The video concludes with a brief channel promotion.

What is the electron configuration of helium?

• 2p6

• 1s1

• 1s2

• 2s2

How many electrons are in the outer shell of neon?

• 8

• 2

• 4

• 6

What is the electron configuration of argon?

• Xenon plus 4f14 5d10

• Krypton plus 4d10 5s2

• Helium plus 2s2 2p6

• Neon plus 3s2 3p6

How many electrons are in the third shell of krypton?

• 18

• 8

• 32

• 10

What is the electron configuration of xenon?

• Helium plus 2s2 2p6

• Neon plus 3s2 3p6

• Argon plus 3d10 4s2 4p6

• Krypton plus 4d10 5s2 5p6

How many electrons are in the fifth shell of radon?

• 18

• 32

• 2

• 8