Ionic Bonding

Which of the following could form an ionic compound? Check all that apply.

• Na⁺ and F^-

• S^2- and O^2-

• Ca²⁺ and Fe³⁺

• Mg²⁺ and Cl^-

Which element(s) will form negative ions? Check all that apply.

• Potassium

• Sulfur

• Iodine

• Magnesium

Which of the following could NOT form an ionic compound? Check all that apply.

• Li⁺ and Cl^-

• F^- and O^2-

• Ba²⁺ and Ag⁺

• Mg²⁺ and S^2-

Calcium Fluoride has a chemical formula of CaF₂. What does the chemical formula tell you?

• There are 2 Calcium ions for every 1 Fluoride ion in the crystal

• There is 1 Calcium ion for every 2 Fluoride ions in the crystal

Why are there two sodiums (Na), in the formation of this ionic compound?

• There always has to be 2 metals

• The overall charge needs to add up to 4

• The overall charge has to be 0

• It needs to have more metal atoms than nonmetal

Write the chemical formula for K and Br (potassium bromide).

• KBr

• K₂Br

• KBr₃

• KBr₂

Anions ____ electrons, becoming _____ charged.

• Gain; positively (+)

• Gain; negatively (-)

• Lose; positively (+)

• Lose; negatively (-)

Atoms are most stable when their outer shell is complete.

• True

• False

Nonmetals (like Cl) typically ____ electrons when they form ionic bonds.

• Gain

• Lose

• Keep the same

Which of the following pairs of elements could NOT react to form an ionic compound?

• Carbon and Oxygen

• Potassium and Fluorine

• Silver and Oxygen

• Aluminum and Chlorine