periodicity (10) Flashcards
1
Q
ionisation energy
A
- decreases from top to bottom in a group
- increases from left to right in a period
- metals : low ie’s
- non-metals : high ie’s
- All ie values are positive
2
Q
isoelectronic
A
an ion that has a noble gas status
3
Q
electron affinity
A
- all ea values are negative
- non-metals : low ea
- increase across a period
- decrease down a group
4
Q
electrons negativity
A
- increases across a period
- decreases down a group
- metals : low electron negativities
- non-metals : high electrons negativities
5
Q
factors that effect ionisation energy
A
- charge of the nucleus (the larger the atomic number the more protons hence the more nuclear control)
- atomic radius (as you move away the nuclear control gets weaker)
- repulsion forces of electrons in the same orbital
6
Q
alkali metals + oxygen
A
metal oxife
7
Q
alkali metals + halogens
A
metal hallide
8
Q
alkali earth metals + water
A
metal oxide and hydrogen
9
Q
halogen + hydrogen
A
hydrogen hallide
