Perchlorate Ion and Iron Compounds

The video tutorial explains how to write the chemical formula for Iron(II) Perchlorate. It begins by identifying the element symbol for iron and the charge indicated by the Roman numeral II. The tutorial then describes the perchlorate ion, its polyatomic nature, and its charge. It explains the need to balance the charges between iron and perchlorate ions to form an ionic compound. The video demonstrates the steps to write the formula Fe(ClO4)2 and concludes with naming the compound based on its formula.

What does the Roman numeral in Iron(II) Perchlorate indicate?

• The atomic number of iron

• The number of electrons in iron

• The charge of the iron ion

• The number of perchlorate ions

What is the chemical formula for the perchlorate ion?

• ClO

• ClO4

• ClO3

• ClO2

How can you determine the charge of the perchlorate ion?

• By looking it up on the periodic table

• By memorizing it or using a table of polyatomic ions

• By calculating the atomic mass

• By counting the number of oxygen atoms

Why do the charges in an ionic compound need to balance?

• To increase the compound's reactivity

• To make the compound soluble in water

• To ensure the compound is stable

• To decrease the compound's melting point

What is the total charge of two perchlorate ions?

• 2+

• 1-

• 2-

• 1+

What is the correct formula for Iron(II) Perchlorate?

• FeClO3

• FeCl2

• Fe2(ClO4)3

• Fe(ClO4)2

If given the formula Fe(ClO4)2, what would be the name of the compound?

• Iron(IV) Perchlorate

• Iron(III) Perchlorate

• Iron(II) Chlorate

• Iron(II) Perchlorate

What does the presence of parentheses in the formula Fe(ClO4)2 indicate?

• The compound is a gas

• The need for a catalyst

• The compound is radioactive

• The presence of a polyatomic ion