What do Roman numerals indicate in the names of ionic compounds?

• The atomic number of the element

• The number of atoms in the compound

• The charge of the metal ion

• The mass of the compound

Why are Roman numerals used in the names of some elements like iron and copper?

• To indicate the element's color

• To represent the element's atomic mass

• To distinguish between different charges the element can have

• To show the element's state of matter

How do Roman numerals help in writing chemical formulas?

• They indicate the number of molecules

• They help balance the charges in the compound

• They provide the melting point of the compound

• They show the temperature at which the compound is stable

In the formula for lead(IV) oxide, what does the Roman numeral IV represent?

• The number of lead atoms

• The total charge of the compound

• The charge of the lead ion

• The number of oxygen atoms

What should you do if you're unsure about writing formulas or names of compounds?

• Watch educational videos for guidance

• Use a calculator to find the formula

• Guess the formula based on the element's color

• Consult a periodic table