Potassium carbonate cannot be produced by Solvay process.

The following metal ion activates many enzymes,participates in the oxidation of glucose to produce $ATP$,and with $Na^+$,is responsible for the transmission of nerve signals.

The metal mainly used in devising photoelectric cells is:

When sodium metal is dissolved in liquid ammonia,a blue-coloured solution is formed. The blue colour is due to:

Which of the following has the highest tendency to undergo the following reaction?
$M^{+}_{(g)} \xrightarrow{\text{aqueous medium}} M^{+}_{(aq)}$

The chloride of an element $A$ gives a neutral solution in water. In the periodic table,the element $A$ belongs to