group 2, group 7, chem edexcel

increases down the group

increases down the group

decreases down the group

increases down the group

decreases down the group

increases down the group

decreases down the group

increases down the group

more electrons increased london forces more energy to break bonds

decreases down the group

decreases down the group

increases down the group

acidified barium chloride forms a white ppt - barium sulfate

add hydrochloric acid gas produced will be carbon dioxide - limewater test

add sodium hydroxide warm gently red litmus paper turns blue

Add dilute nitric acid then silver nitrate solution

White precipitate of silver chloride

Cream precipitate of silver bromide

Yellow precipitate of silver iodide

crimson

red

brick red

yellow

green

lilac

no colour

Li2CO3 -> Li2O + CO2

MCO3 -> MO + CO2

metal oxide, brown fumes of nitrogen dioxide, and oxygen

harder to decompose down group

2LiNO3 -> Li2O + 2NO2 + 1/2O2

metal nitrite + oxygen

metal oxide + nitrogen oxide + oxygen

pale green gas

yellow gas

volatile brown liquid

volatile dark grey solid

a more reactive halogen will displace a less reactive halogen

colourless + water

colourless

orange

orange + cyclohexane

red

dark purple