Writing Ionic Formulas

Na ⁺  and  S ^-2

• Na₂S
• NaS₂
• Na₂S₂
• NaS

Tags

NGSS.MS-PS1-1

K ⁺  and  N^-3

• KN
• KN₃
• K₃N₃
• K₃N

Tags

NGSS.MS-PS1-1

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

• KO.
• K₂O.
• K₂O₂.
• KO₂.

Tags

NGSS.MS-PS1-1

How many valence electrons does a bromine atom have?

• 1
• 2
• 6
• 7

Tags

NGSS.MS-PS1-1

What is the charge of an atom that has lost one electron?

• -1
• -2
• +1
• +2

What is the correct formula for the compound, lithium oxide?

• LiO
• Li₂O
• LiO₂
• Li₂O₂

Tags

NGSS.MS-PS1-1

What is the formula for manganese(III) oxide?

• MgO
• Mg₂O₃
• MnO
• Mn₂O₃

Name the following ionic compound: Cr(NO₂)₃

• chromium nitrite
• chromium nitride
• chromium III nitride
• chromium III nitrite

The formula of calcium phosphate is 

• CaPO₄
• Ca₂(PO₄)₃
• Ca₃PO₄
• Ca₃(PO₄)₂

The chemical formula of Iron (III)bromide is

• FeBr
• Fe(III)Br
• FeBr₃
• Fe₂Br₃

Tags

NGSS.HS-PS1-2