CH1012
                                         L1 /   
‹#›
                                         L1 /   
5
ELECTRONIC CONFIGURATIONS
The 6 alkali metals have
1 valence electron.
                       ns1
The 6 alkaline earth metals
all have 2 valence electrons.
                       ns2
• Remember valence electrons
are those electrons which are
outside the last filled noble gas
configuration.
(b)  Electronic Configurations