Chapter 4: Group Elements

Halogen atoms

________ can share electrons via covalent bonding with other non- metals so as to achieve a full outer shell.

Chlorine

________ can displace bromine and iodine form an aqueous solution of its salt (a bromine or iodine)

Metals

________ are elements which can for positive ions when they react.

Atoms

________ generally react to form a full outer shell.

alkali metals

The ________ are lithium, sodium, potassium, rubidium, caesium and francium.

Non metals

________ dont generally form positive ions when they react.

Fluorine

________ is a very reactive, poisonous yellow gas.

Neon

________ is a gas at 25C.

Bromine

________ is a dense, poisonous red- brown volatile liquid.

Iodine

________ is a dark grey crystalline solid or a purple vapour.

Transition metals

________ can have more than one iron.

Transition metal compounds

________ often make good catalysts.

Nickel

________ based catalysts are used in the hydrogenation of alkenes.

Transition metal ions

________ are often coloured, and so compounds that contain them are colourful.

Lithium

________ reacts to form ________ oxide.

Iron catalyst

________ is used in the haber process for making ammonia.

compounds

The ________ that form when halogens react with non- metals all have simple molecular structures.

Helium

________ has a lower boiling point than neon as it is further up the group.

relative atomic mass

The boiling point of the noble gases increase as you move down the group along with increasing ________.

Sodium

________ reacts to form a mixture of sodium oxide (Na20) and sodium peroxide (Na2O2)

Potassium

________ reacts to form a mixture of potassium peroxide (K202) and potassium superoxide (K02)

Chlorine

________ is a fairly reactive, poisonous dense green gas.

Metals

________ towards the bottom of the periodic table have outer electrons which are a long way from the nucleus.

Bromine

________ will also displace iodine because of the trend in reactivity.

alkali metals

The ________ are all soft and have low density.

transition metals

Group 1 metals are much more reactive than ________- they react more vigorously with water, oxygen or Group 7 elements, for example.

Non metals

________ are at the far right and top of the periodic table.

Sodium + Water

Sodium Hydroxide + Hydrogen

2Na + 2H20

2NaOH + H

Sodium + Chlorine

Sodium Chloride

2Na + Cl

2NaCl

F-, CI-, Br

and I-

Cl2 + 2KI

I2 + 2KCI

CL2 + 2KBr

Br2 + 2KCI