Strontium and Ionic Compounds

The video tutorial explains how to write the formula for strontium oxide by identifying the element symbols for strontium and oxygen. It discusses the nature of ionic compounds, emphasizing the need to balance charges between metals and non-metals. Strontium, being in group two, has a 2+ charge, while oxygen, in group 16, has a 2- charge. The tutorial ensures that the net charge of the compound is zero, resulting in the formula SRO. Dr. B concludes the session with thanks.

What is the symbol for strontium on the periodic table?

• Sr

• St

• Sm

• Sn

Which element is represented by the symbol 'O'?

• Osmium

• Osmium

• Oganesson

• Oxygen

Why is strontium oxide considered an ionic compound?

• It is a molecular compound.

• It contains a metal and a non-metal.

• It contains only non-metals.

• It contains only metals.

What is the charge of strontium in strontium oxide?

• 0

• 3+

• 2+

• 1+

What is the charge of oxygen in strontium oxide?

• 3-

• 2-

• 0

• 1-

How do the charges of strontium and oxygen combine in strontium oxide?

• They do not combine.

• They add up to a positive charge.

• They add up to a negative charge.

• They add up to zero, forming a neutral compound.