Ionic Compounds and Bicarbonate

The video tutorial explains how to write the formula for lead(II) bicarbonate. It begins by identifying lead as a transition metal with a 2+ charge, indicated by the Roman numeral II. The bicarbonate ion, a polyatomic ion with a 1- charge, is introduced. The tutorial emphasizes the importance of balancing ionic charges to achieve a net charge of zero. By placing parentheses around the bicarbonate ion and adding a subscript of two, the charges are balanced, resulting in the formula Pb(HCO3)2. The video concludes with a brief summary of the process.

What is the symbol for lead on the periodic table?

• Ld

• Pd

• Le

• Pb

What does the Roman numeral II indicate in lead(II) bicarbonate?

• The charge of the lead ion

• The atomic number of lead

• The number of lead atoms

• The number of bicarbonate ions

Which of the following is a polyatomic ion?

• Na

• Pb

• HCO3

• O2

What is the ionic charge of the bicarbonate ion?

• 2+

• 1+

• 1-

• 3-

How do you balance the charges in lead(II) bicarbonate?

• Use parentheses and a subscript

• Add more bicarbonate ions

• Change the charge of lead

• Add more lead atoms

What is the final formula for lead(II) bicarbonate?

• Pb2(HCO3)

• Pb(HCO3)2

• PbHCO3

• Pb2HCO3