M4 The
Periodic Table: Group 1 & 2 metals
Slide 30 of 42
Summary
Going
Down Group
1
Bigger atoms
–one extra full shell of electrons for
each period you go down.
Therefore,
–Softer
(easier to cut)
–Lower
melting point
–Lower boiling
point, because of weakening force of attraction between atoms.
And more reactive
–Because the outer electron is more
easily lost as it is farther away
from the nucleus.
