Sodium and Nitrite Ion Concepts

The video tutorial explains how to write the chemical formula for sodium nitrite. It begins by identifying sodium on the periodic table and recognizing nitrite as a polyatomic ion. The tutorial discusses the ionic nature of the compound and the importance of balancing charges to achieve a net charge of zero. The final formula for sodium nitrite is presented as NaNO2.

What is the symbol for sodium on the periodic table?

• Si

• Na

• S

• N

Which of the following is a polyatomic ion?

• Chlorine

• Oxygen

• Nitrite

• Sodium

What is the charge of a sodium ion?

• 1+

• 1-

• 0

• 2+

What is the charge of the nitrite ion?

• 0

• 1+

• 1-

• 2-

What is the correct chemical formula for sodium nitrite?

• NaCl

• NaNO2

• NaNO3

• Na2O