The wire of a flash bulb is made of

Aluminium vessels should not be washed with materials containing washing soda because

The solution of sodium metal in liquid ammonia is a strong reducing agent due to the presence of:

Which one of the alkali metals forms only the normal oxide,$M_2O$,on heating in air?

$A$ $s$-block element $(M)$ reacts with oxygen to form an oxide of the formula $MO_{2}$. The oxide is pale yellow in colour and paramagnetic. The element $(M)$ is:

Give the biological importance of the sodium ion $(Na^+)$.