Alkali and alkaline earth metals cannot be obtained by chemical reduction methods because they are very strong reducing agent and highly reactive metals. Because of this they can not be reduced by any other substance very easily.
Alkali and alkaline earth metals are themselves very strong reducing agents and reducing agents stronger than them are not easily available. Therefore, these metals cannot be obtained by chemical reduction methods.
All the alkali elements are silvery white solid.These are soft in nature and can be cut with the help of knife except the lithium.
When freshly cut, they have a bright...
(i) Ionisation enthalpy: The first ionisation enthalpies of alkaline earth metals are higher than those ) of alkali metal because of increased nuclear charge, However 2nd ionisation enthalpies of alkaline...
On heating an alkali earth metal or its salt, the electrons are excited easily to higher energy levels because of absorption of energy. When these electrons return to their ground...
Thermal stability: -
Carbonates: - The carbonates of alkali metals except lithium carbonate are stable towards heat. The carbonates of alkaline earth metals and Lithium carbonate decompose on heating to form...
(d) : All the alkali metals are highly reactive elements since they have a strong tendency to lose the single valence s-electron to form unipositive ions having inert gas configuration....
