Symbol of nitrate is ……

Symbol of sodium ion is ……

The formula of Aluminium Carbonate is ………

The symbol of Zinc ion is ……

CO : 1 : 1 :: $C{O}_{2}CO\_2$ : ….. ?

Molecules in water is $H_{2}OH\_2O$, then molecules in the Hydrogen is

Why did symbol of copper taken as ‘Cu’ ?

Generally all inert gases like He, Ne, Ar, Kr, Xe are available as monoatomic elements. Guess the reason.

If '$x^{-1}x^\{-1\}$' and Na'x', then 'x' may be

The valencies of ‘Mg’ and ‘O’ are …… respectively in MgO.

'$X_{2}YX\_2Y$', 'X' H 'Y', 'X' OH

Guess X and Y.

By using $A{g}^{+}Ag^+$ $C{l}^{-}Cl^-$, $N{a}^{+}Na^+$, $O{H}^{-}OH^-$ How many substances can be formed?

No. of molecules in 44 grams of $C{O}_{2}CO\_2$ is equal to

Law of conservation of mass was proposed by

Law of conservation of mass was experimentally verified by