Compounds: Formulae and Naming

Multiple Choice

Identify formulae.

• sodium chloride

• NaCl

• 2+

• 3-

Multiple Choice

Iodine is in group VII like chlorine and fluorine, what is its valency?

• 1

• -1

• 7

• -7

Multiple Choice

Use the information in the table to work out the formula of compound formed between:

A and Q

• A₁Q

• A-Q

• A₁Q₁

• AQ

Multiple Choice

Use the information in the table to work out the formula of compound formed between:

Lithium (Li) and T

• LiT

• Li₃T

• LiT₃

• Li³T

Multiple Choice

Use the information in the table to work out the formula of compound formed between:

D and oxygen

• DO₂

• D₂O₂

• DO

• D₂O

Multiple Choice

Use the information in the table to work out the formula of compound formed between:

E and oxygen

• E₂O₃

• E₃O₂

• EO₃

• E₂O

Multiple Choice

Use the information in the table to work out the formula of compound formed between:

Q and R

• Q₂R₁

• Q₁R₂

• QR

• Q₂R

Multiple Choice

What is the valency of the radical H₂PO₄^-

• 1

• 2

• 3

• 4

Multiple Choice

Identify the radical.

• P^3-

• NH₃

• SiO₂

• MnO₄^-

Multiple Choice

Identify the radicals

i. SO₃^2-

ii. SO₂

iii. S^2-

• i only

• i and ii only

• i, ii and iii

• i and iii only

Multiple Choice

Given the formula of the phosphate radical is PO₄^3- what would be the formula of the phosphate of element A?

• A₃PO₄

• A₃PO₄^3-

• A₃PO₄^3-

• A₃⁺PO₄^3-

Multiple Choice

Given the formula of the hydrogencarbonate radical is HCO₃^- what would be the formula of the hydrogencarbonate of element A?

• A⁺HCO₃^-

• A₃HCO₃^-

• A₃HCO₃

• AHCO₃

Multiple Choice

Given the valency of the hydrogencarbonate radical, HCO₃^- is 1, what would be the formula of D hydrogencarbonate?

• D(HCO₃)

• D(HCO₃)₂

• D₃HCO

• D₂(HCO₃)₂

Multiple Choice

Use the information below to work out formula of calcium nitrate.

Ca²⁺ has a valency = 2

NO₃^- has a valency = 1

• CaNO₃

• Ca(NO₃)₂

• Ca₂NO₃

• CaNO_{3 2}

Multiple Choice

Use the information below to work out formula of ammonium phosphide.

NH₄⁺ has a valency =1

P^3- has a valency = 3

• (NH)₃P

• NH₄P₃

• NH₄P

• (NH₄)₃P

Multiple Choice

What is the name of the binary ionic compound formed between sodium and nitrogen?

• sodium nitride

• sodium nitrogen

• sodium nitrite

• sodium nitrate

Multiple Choice

What is the name of the binary ionic compound formed between calcium and sulphur?

• calcium sulphur

• calcium sulphite

• calcium sulphide

• calcium sulphate

Multiple Choice

What is the name of the binary covalent compound with formula PCl₅?

• Phosphorous pentachloride

• Phosphorous chloride

• Phosphorous pentachlorine

• Monophosphorous pentachloride

Multiple Choice

What is the name of the binary covalent compound with formula SF₆?

• Sulphur fluoride

• Sulphur hexafluoride

• Monosulphur hexafluoride

• Sulphur hexafluorine