s - block Elements (Alkali and Alkaline Earth Metals)
Sodium burns in excess air to give mainly:
Why is calcium preferred over sodium to remove the last traces of moisture from alcohol?
Both $$ Na $$ and $$ Ca $$ reacts with water to form their respective hydroxides. But $$ Na $$ readily reacts with alcohol to form sodium ethoxide but $$ Ca $$ reacts only very slowly.
$$ 2C_2H_5OH+2Na \longrightarrow 2C_2H_5ONa+H_2 $$
Therefore, $$ Ca $$ is preferred over $$ Na $$ to remove the last traces of moisture from alcohol.
Sodium burns in excess air to give mainly:
Caustic alkalis are corrosive.
Sodium metal cannot be stored under
The violet flame shown by potassium in Bunsen flame is due to jumping of the electron from :
A metal which does not react with nitrogen is:
Why is sodium metal kept under kerosene oil ?
Why is calcium preferred over sodium to remove last traces of moisture from alcohol?
The alkali metal that reacts with nitrogen directly to form nitride is:
When sodium is heated in moist air, the ultimate product obtained is:
Potassium is kept in