Electron Configuration and Orbital Theory

The video tutorial explains how to determine the element represented by a given electron configuration, specifically focusing on xenon. It begins by counting electrons to find the atomic number, confirming xenon as the element. The tutorial then introduces condensed notation using krypton as a reference point. Finally, it discusses orbital blocks and the full electron configuration, reinforcing the identification of xenon.

What is the total number of electrons in the element with the electron configuration ending in 5s2 5p6?

• 36

• 54

• 118

• 86

Why are elements on the periodic table considered neutral?

• They have no electrons.

• They have more protons than electrons.

• They have more electrons than protons.

• The number of protons equals the number of electrons.

Which element is identified by the electron configuration that ends in 5s2 5p6?

• Radon

• Argon

• Xenon

• Krypton

What is the condensed electron configuration notation for xenon using krypton?

• [Kr] 5s2 5p6

• [Kr] 4d10 5s2

• [Kr] 5p6

• [Kr] 4s2 4p6

Which noble gas is used as a reference in the condensed notation for xenon?

• Neon

• Argon

• Krypton

• Radon

In electron configurations, why is 5s2 often written before 4d10?

• Because 5s2 has more electrons.

• It's a convention to show the filling order.

• 5s2 is more stable.

• 4d10 is not part of xenon's configuration.

What is the significance of orbital blocks in the periodic table?

• They help in identifying the element's color.

• They show the element's atomic mass.

• They determine the element's reactivity.

• They indicate the order of electron filling.

Which orbital is filled after 4s2 in the electron configuration?

• 3d

• 4p

• 5s

• 4d

How many electrons can the 'd' orbital hold?

• 14

• 2

• 6

• 10

What is the electron configuration for xenon?

• 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2

• 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2

• 1s2 2s2 2p6 3s2 3p6 4s2 4p6 5s2 5p6

• 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6