S3 Chemistry - Group Ion Formula

Where do you find group ions in the databooklet?

• Page 1

• Page 4

• Page 8

• Page 10

How do you know a compound has a group ion?

• it contains ammonium in the name

• it contains hydroxide in the name

• it contains -ate or -ite in the name

• all of these

What is this group ion called?

(SO₄^2-)

• sulfite

• sulfate

• sulfur

• sulfonate

What is the valency of hydroxide?

• 1

• 2

• 3

• 4

Which of these is not a group ion?

• (OH^-)

• (SO₄^2-)

• ammonium

• (H₂O)

What would be the correct way to write formula for nitrate?

• (NO₃)

• NO3

• NO₃

• No₃

What is the valency of phosphate?

• 1

• 2

• 3

• 4

What is the correct formula for phosphate?

• (PO₄)

• P

• PO₃

• None of these

What is the valency of (NH₄⁺)

• 1

• 2

• 3

• 4

What is the formula for calcium phosphate?

• Ca₃(PO₄)₂

• Ca(PO₄)

• Ca₂(PO₄)₃

• none of these