Naming and Writing Formulas for Binary Ionic Compounds

What is the formula for magnesium phosphide?

• Mg₃P₂
• Mg₂P₃
• Mg₂PO₃
• Mg₃(PO₃)₂

The chemical formula for an ionic compound of potassium and oxygen is

• KO.
• K₂O.
• K₂O₂.
• KO₂.

Tags

NGSS.MS-PS1-1

The first step in naming an ionic compound is always...

• Naming the anion
• Changing the ending to -ide
• Naming the cation
• Writing the cation charge

Which of these combinations is an ionic compound made of?

• Metal and Metal
• Nonmetal and Nonmetal
• Metal and Nonmetal
• Cation and Cation

Name this compound: 
KF

• Potassium fluoride
• Potassium fluorite
• Fluorine potasside 
• Potassium fluorate

Name the following ionic compound: NaF

• nitrogen fluorine
• sodium fluoride
• nitrogen fluoride
• sodium fluorine

Name the following ionic compound: BeCl₂

• beryllium chlorine
• beryllium II chloride
• beryllium chloride
• beryllium dichloride

Name the following ionic compound: Cs₂S

• cesium sulfide
• cesium sulfate
• cesium II sulfate
• cesium II sulfide

What is the formula for magnesium chloride?

• MgCl
• Mg₂Cl
• MgCl₂
• Mg(ClO₃)₂

Because the overall charge in a compound must be ____________, the charge of iron in Fe₂O₃ must be 3⁺.

• 2⁺
• 1⁺
• 0
• 1^-