Ionic Charges and Chemical Formulas

The video tutorial explains how to write the chemical formula for sodium bromate. It begins by identifying the element symbols for sodium and bromate, highlighting the importance of recognizing polyatomic ions. The bromate ion is identified as BrO3 with a 1- charge. Sodium, with a 1+ charge, balances the compound to achieve a neutral charge. The tutorial concludes by confirming the formula for sodium bromate as NaBrO3.

What is the chemical symbol for sodium?

• Sb

• So

• S

• Na

Which of the following is a polyatomic ion?

• O2

• Na

• Br

• BrO3

What is the ionic charge of the bromate ion?

• 1+

• 2-

• 1-

• 2+

What is the ionic charge of sodium?

• 1+

• 2-

• 2+

• 1-

What is the chemical formula for sodium bromate?

• NaBr

• NaO3

• NaBrO

• NaBrO3