Writing Formulas for Binary Ionic Compounds

What is the formula for magnesium phosphide?

• Mg₃P₂
• Mg₂P₃
• Mg₂PO₃
• Mg₃(PO₃)₂

In the compound TiO₂, titanium has a charge of

• 4⁺
• 2⁺
• 2^-
• 4^-

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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

• KO.
• K₂O.
• K₂O₂.
• KO₂.

Which is most likely to form a negative ion?

• an element from group 17
• a metal
• an element from group 1
• an element with atoms that have eight valence electrons

Tags

NGSS.HS-PS1-1

What is a cation?

• positive ion
• Neutral atom
• Two additional protons
• negative ion

Name this compound: 
NaBr

• Bromide sodide
• Sodium bromide
• Sodium bromate
• Sodium bromite

Write the formula for copper (I) phosphide

• Cu₃P
• CuP
• Cu₁P
• CuP₃

Name the ionic compound SnSe₂

• Tin diselenide
• Tin (IV) Selenide
• Tin selenide
• Tin (II) triselenide

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