Lithium Sodium and potassium were put in the same group on the basis of similar properties.
What is the similarity in their properties ?
Lithium, sodium, potassium are all metals that react with water to liberate hydrogen gas. Is there any similarity in the atoms of these elements?
(a) Lithium, sodium, potassium are all metals that react with waterto liberate hydrogen gas. Is there any similarity in the atoms ofthese elements?
(b) Helium is an unreactive gas and neon is a gas of extremely lowreactivity. What, if anything, do their atoms have in common?