Hydride and Strontium Chemistry Concepts

This video tutorial explains how to write the chemical formula for strontium hydride. It begins by identifying the symbols for strontium and hydrogen, then discusses their ionic charges. Strontium, being in group two, has a 2+ charge, while hydrogen, when forming hydride, has a 1- charge. The video explains how to balance these charges to form a neutral compound, resulting in the formula SrH2. The tutorial concludes with a reminder about the charge of hydride ions when bonded to metals.

What is the chemical symbol for strontium?

• St

• Sn

• Sm

• Sr

Why does hydrogen have a 1 minus charge when it forms a hydride?

• Because it gains an electron

• Because it loses an electron

• Because it has a positive charge

• Because it shares an electron

What is the ionic charge of strontium?

• 1+

• 2+

• 2-

• 1-

How many hydride ions are needed to balance the charge of one strontium ion?

• Four

• Three

• Two

• One

What is the correct formula for strontium hydride?

• Sr2H

• SrH2

• Sr2H2

• SrH

What charge does hydride typically have when bonded to a metal?

• 1+

• 2-

• 2+

• 1-

What is the significance of the term 'hydride' in a compound?

• It indicates a positive charge

• It indicates a negative charge

• It indicates a double bond

• It indicates a neutral charge