Groups Flashcards
1
Q
group 0
A
noble gases
2
Q
reactivity in group 0
A
- unreactive
- do not form molecules
- due to their full outer shell
3
Q
boiling points in group 0
A
- increase down the group
- due to increasing atomic number
4
Q
group 1
A
alkali metals
5
Q
reactivity in group 1
A
- very reactive with oxygen, water and chlorine
- 1 electron in outer shell (1+ ions)
6
Q
reactivity down group 1
A
- increases
- negative outer electron is further from the positive nucleus so can be lost more easily
7
Q
transition metals vs alkali metals
A
- less reactive
- harder
- denser
- higher melting points
8
Q
typical properties of transition metals
A
- different ion properties with different charges
- used as catalysts
- form coloured compounds
9
Q
group 7
A
halogens
10
Q
molecules in group 7
A
- consist of molecules made of a pair of atoms
- 7 electrons on their outer shell (-1 ions)
11
Q
melting and boiling points in group 7
A
- increase down the group
- due to increasing atomic mass number
