Lithium Phosphide and Ionic Charges

The video tutorial explains the formation of lithium phosphide, an ionic compound. It begins by identifying lithium and phosphorus on the periodic table and explains their roles as a metal and non-metal, respectively. The tutorial details how to balance the charges of lithium (+1) and phosphorus (-3) to achieve a net charge of zero, resulting in the formula Li3P. The crisscross method is introduced as a way to verify the formula. The video concludes with a summary and thanks from Dr. B.

What type of elements are lithium and phosphorus?

• Lithium is a non-metal and phosphorus is a metal

• Both are metals

• Both are non-metals

• Lithium is a metal and phosphorus is a non-metal

What is the charge of a lithium ion?

• +1

• +3

• -3

• -1

Why do we need to balance the charges in lithium phosphide?

• To make the compound more reactive

• To achieve a net charge of zero

• To change the compound's color

• To increase the compound's mass

How many lithium ions are needed to balance one phosphorus ion?

• Three

• Four

• Two

• One

What is the correct formula for lithium phosphide?

• Li3P

• Li4P

• Li2P

• LiP

What method can be used to verify the formula of lithium phosphide?

• Crisscross method

• Reverse method

• Cross-check method

• Double-check method

What is the final confirmed formula for lithium phosphide?

• LiP

• Li2P

• Li3P

• Li4P