Ionic Formulas Writing

Valence electrons are the electrons in the outermost orbit of an atom.

• True

• False

What will be the charge of an oxygen ion if it had 8 protons and 10 electrons?

charge = protons - electrons

• 2+

• 2-

• 0

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

• Naming the anion (non-metal)

• Changing the ending to -ide

• Naming the cation (metal)

• Writing the cation charge

Write the ionic formula for the compound formed between sodium and chlorine.

• Na₂Cl

• NaCl₂

• NaCl

• ClNa

What is the ionic formula for the compound formed between magnesium and oxygen?

• MgO₂

• Mg₂O

• Mg₂O₃

• MgO

Write the ionic formula for the compound formed between calcium and bromine.

• CaBr₂

• CaBr

• Ca₂Br

• CaBr₃

What is the ionic formula for the compound formed between aluminum and sulfate?

• Al(SO₄)₃

• Al₃(SO₄)₂

• Al(SO₄)₂

• Al₂(SO₄)₃

Balance the charges and write the ionic formula for the compound formed between potassium and phosphate.

• K₂PO₄

• K₃PO₄

• KPO₃

• K₄(PO₄)₃

Write the ionic formula for the compound formed between barium and nitrate.

• Ba₂NO₃

• Ba₂N₂O₆

• BaNO₃

• Ba(NO₃)₂

What is the ionic formula for the compound formed between lithium and hydroxide?

• LiOH

• Li₂O

• Li₂OH

• LiHO