Lithium Hydride and Ionic Charges

The video tutorial explains how to write the formula for lithium hydride. It begins by identifying lithium as a metal bonded to hydrogen, forming lithium hydride. The tutorial discusses the ionic charges of lithium and hydrogen, noting that while lithium has a +1 charge, hydrogen, when bonded to a metal, has a -1 charge, forming a hydride. The charges must balance to zero, leading to the formula LiH. The video concludes with a recap of these concepts.

What is the symbol for lithium in the context of lithium hydride?

• H

• Li

• Lh

• L

In which group of the periodic table is lithium found?

• Group 2

• Group 4

• Group 1

• Group 3

What is the ionic charge of hydrogen when it is bonded to a metal?

• 1-

• 1+

• 2+

• 0

Why is hydrogen referred to as hydride in lithium hydride?

• Because it has a 1+ charge

• Because it has a 1- charge

• Because it is a metal

• Because it is in Group 1

What is the net charge of lithium hydride?

• 0

• 1-

• 2+

• 1+

What is the chemical formula for lithium hydride?

• LiH

• LiH2

• H2Li

• Li2H