the periodic table Flashcards
chapter 3
why are the noble gases in group zero unreactive?
their very stable electronic structure
Group 1
alkali metals
boiling and melting points-group 1
decrease as you go down the group
reactivity of group 1
increases as you go down the group
what happens when the metals in group 1 react with water?
produces hydrogen and an alkaline solution containing the metal hydroxide
what ions does group 1 form?
1+ ions
-generally white and dissolve in water, giving colorless solutions
melting points- transition metals
compared with the alkali metals, transition metals have a much higher melting point, they are also stronger and harder but are much less reactive.
transition metals reacting with water or oxygen
they do not react vigorously
what are transition metals important for?
industrial catalysts
what ions do halogens form?
with a single negative charge in their ionic compounds with metals
what type of bonding do halogens form?
covalent bonding
reactivity of group 7 (halogens)
decreases as you go down the group
reactivity within groups
-larger atoms lose electrons more easily as you go down the group
-larger atoms gain electrons less easily as you go down the group
melting points group 0
increase as you go down the group, relative atomic mass increases so there are greater intermolecular forces which needs to be overcome.
group 7 melting and boiling point
increase as you go down the group
