Molecule exercise V (Oxo compounds)

An exercise about the groups and structure of oxo compounds.

Comparison of halogens

Halogen elements are a group in the periodic table consisting of...

Phosphate ion (PO₄³⁻)

A compound ion formed when a phosphoric acid molecule releases a...

Silver nitrate (AgNO₃)

One of the raw materials of traditional photography.

Nitrate ion (NO₃⁻)

A compound ion, the main source of nitrogen for plants.

Sulphate ion (SO₄²⁻)

A compound ion produced when sulphuric acid releases a proton.

Boron trifluoride (BF₃)

Colourless, heavier-than-air gas with a pungent odour. It forms...

Fluorine (F₂)

The lightest halogen, a pale yellow-green, toxic gas, extremely...

Comparison of hydrogen halides

Atoms within hydrogen halides are bound by covalent bonds, forming...

Ammonium ion (NH₄⁺)

A compound ion generated when a proton is added to an ammonia...

Bromine (Br₂)

One of the halogens, it may cause skin irritation.

Hydronium ion (H₃O⁺)

The presence of hydronium ions relative to hydroxide ions...

Hydroxide ion (OH⁻)

A compound ion formed when a water molecule releases a proton.

Iodine (I₂)

A solid, grey substance which sublimates when heated. Its solution...

Hydrogen-fluoride (HF)

One of the hydrogen halides, a highly aggressive substance - it...

Nitrogen monoxide (Nitric oxide) (NO)

A colourless, heavier-than-air gas, an intermediate in the...

Chlorine (Cl₂)

A yellow-green toxic gas with a strong odour, one of the halogens.

Sulphur dioxide (SO₂)

Sulphur dioxide emission is the main cause of acid rains. It is an...

Water (H₂O)

Water is a very stable compound of hydrogen and oxygen, vital for...

Ammonia (NH₃)

Ammonia is a colourless gas with a characteristic pungent smell....

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