Electron Configuration of Cesium

This video tutorial explains how to write the electron configuration for cesium (Cs) and its ion (Cs+). It begins by introducing the concept of electron configuration and the importance of distributing electrons around the nucleus. The tutorial then describes two methods for writing electron configurations: using a chart and using the periodic table. The video provides a detailed step-by-step guide to writing the electron configuration for Cs, highlighting the filling of s, p, and d orbitals. Finally, it explains how to adjust the configuration for the Cs+ ion by removing one electron, resulting in a positive charge.

What is the atomic number of a neutral cesium atom?

• 56

• 53

• 54

• 55

Which of the following is a method to determine electron configuration?

• Using a calculator

• Using a balance

• Using a chart

• Using a microscope

How many electrons can a full s orbital hold?

• 4

• 2

• 6

• 1

What is the electron configuration notation for the 2p orbital in cesium?

• 2p8

• 2p6

• 2p4

• 2p2

What is the last term in the electron configuration of cesium?

• 5s1

• 6s1

• 5p6

• 6p6

What happens to the electron configuration when cesium becomes Cs+?

• Loses a proton

• Loses an electron

• Gains a proton

• Gains an electron

What is the charge of a cesium ion after losing one electron?

• +2

• +1

• 0

• -1

How many electrons does Cs+ have?

• 55

• 54

• 56

• 53

What is the significance of the 6s1 term in cesium's electron configuration?

• It is an error

• It shows the valence electron

• It represents a d orbital

• It indicates a full shell

What is the main difference between the electron configurations of Cs and Cs+?

• Cs+ has a different atomic number

• Cs has a different atomic number

• Cs has more electrons

• Cs+ has more electrons