Ionic Compounds Formula Writing Quiz

What is the first step in writing the formula for an ionic compound?

• Find the least common multiple of the charges

• Adjust the subscripts to balance charges

• Write the formula for the anion first

• Write the formulas for the cation and anion separately

Why is the cation written first in the formula of an ionic compound?

• It is heavier than the anion

• It is more reactive than the anion

• It's a convention to write the positively charged ion first

• Because it has a higher atomic number

What is the charge of the cesium ion in cesium chloride?

• +1

• +2

• -1

• -2

In the formula for calcium fluoride, why is the subscript for fluoride doubled?

• To match the atomic mass of calcium

• To balance the charges between calcium and fluoride

• To make the formula more stable

• To increase the solubility of the compound

What is the charge of the calcium ion in calcium fluoride?

• +1

• +2

• -1

• -2

What is the formula for the ammonium ion?

• NH2-

• NO3-

• NH4+

• NH3

Which of the following is a polyatomic ion?

• NH4+

• O2-

• Cl-

• Na+

Why is there no Roman numeral for aluminum in aluminum hypochloride?

• Aluminum is a non-metal

• Aluminum forms multiple types of cations

• Aluminum is not a metal

• Aluminum only forms one type of cation

What is the least common multiple of the charges in lead(II) phosphate?

• 6

• 5

• 8

• 4

What is the charge of the phosphate ion in lead(II) phosphate?

• +3

• -3

• +2

• -2