Cesium Sulfide and Ionic Charges

The video tutorial explains how to write the chemical formula for cesium sulfide. It begins by identifying the elements involved: cesium (Cs) and sulfur (S). The tutorial then discusses the ionic charges of these elements, with cesium having a +1 charge and sulfur a -2 charge. To achieve a neutral compound, the video demonstrates that two cesium ions are needed to balance one sulfide ion, resulting in the formula Cs2S. The tutorial concludes with a brief summary and thanks to the viewers.

What are the symbols for the elements involved in cesium sulfide?

• Cs and S

• C and Se

• C and S

• Cs and Se

What is the ionic charge of cesium in the periodic table?

• 2-

• 1+

• 2+

• 1-

Which group does sulfur belong to in the periodic table?

• Group 1

• Group 16

• Group 2

• Group 17

How many cesium ions are needed to balance the charge of one sulfide ion?

• One

• Two

• Three

• Four

What is the correct formula for cesium sulfide?

• Cs2S2

• Cs2S

• CsS

• CsS2