Group 0, 7 & 1 Flashcards
What is in group 7?
Halogens
What happens to reactivity in group 7(halogens) as it goes up the table?
Increasing reactivity as you go up the table
Halogens are…? (Reactivity/metal or non metal)
Halogens are very reactive non metals
Diatomic molecules
Why are halogens reactive?
They are one electron away from completing their outer shell. The higher up they are in the periodic table, the less shells they have and therefore the attraction from the nuclear to gain electrons is stronger.
What happens in a displacement reaction?
A more reactive halogen/metal displaces a less reactive halogen from a halide or metal compound
What is in group 0?
Noble gases
Why are noble gases so unreactive/inert?
Because they have full outer shells
What is in group 1?
Alkali metals
What do halogens form when reacting?
Negative ions
What happens in noble gases as they go down the table?
Density gets higher
When we’re noble gases discovered?
19th century
Properties of noble gases?
Colourless, low melting points&boiling points, poor conductors of heat and electricity
Are alkali metals reactive?
Yes because they only have one electron on their outer shell, they can loose one easily
Patterns of reactivity in alkali metals(group1)
They get more reactive as you go down the table
List some alkali metals?
Lithium, Sodium, potassium
