Note the radii in nanometers would be 0.152nm ; 0.186nm and 0.231nm.
Li . ________ Na __________ K ____________
Down the group there are _________ shells
The outermost electron is ____________ from the nucleus.
(The increase in the nuclear charge is opposed by the repulsion from the electrons in the inner shells).
The ______________ electron is less strongly attracted to the nucleus .
The energy needed to remove the outer shell electron ______________ .