periodic table, g1, g0, g7

• outermost shell electrons depend on group number
• atomic radious increases down and left
• ionization energy increases up and right
• ionization is to remove electrons
• electron affinity is how much electrons are added
• electron affinity increases up and right
• g0 full outer energy level, makes them unreactive
• g0 boiling point increases lower in group
• g0 higher atomic mass higher boiling point
• g7 is also know as halogens
• g7 is all in some way dangerous
• g7 is less reactive as it goes down
• g7 are diatomic molecules because they share atoms
• g7 boiling point increases as elements go down the group
• g7 can commonly form ionic bonds with g1
• g7 more reactive will always displace less reactive
• g1 alkali metals
• g1 unlike normal metals, they are soft, low density, low melting point, more reactive
• g1 react vigorously with water, oxygen and group seven elements
• g1 more reactive down the group
• g1 melting and boiling points decrease down the group