An atom of chlorine

An isotope of chlorine

A molecule of chlorine

An isobar of chlorine

^{$\frac{1}{12}$}th of mass of carbon atom

^{$\frac{1}{6} th$} of mass of carbon atom

^{$\frac{1}{4}th$} of mass of carbon atom

^{$\frac{1}{16}th$} of mass of carbon atom

12 U

22 U

20 U

32 U

Acetic acid - $CH _3$ COOH

Slaked lime - $Ca\left(OH\right)_2$

Aluminium oxide - $AlO _3$

Potassium carbonate - $K _2CO _3$

Molecular weight of a compound

Number of atoms in a compound

Ratio of weights of elements in a compound

Nature of bonds between elements in a compound

Molecular weight of carbon dioxide is 44.

Carbon dioxide contains 32 parts by weight of carbon.

Carbon atom is joined with the oxygen atoms by chemical bonds.

There are three atoms in the molecule.

-2

-3

+3

+2

Copper

Sodium

Chlorine

Calcium

Hydragyrium oxide

Mercurous oxide

Mercuric oxide

Hydragyric oxide

Sodium forms acidic and positive radical.

Chlorine forms basic and positive radical.

Sodium forms positive and basic radical.

Chlorine forms negative and basic radical.

$(PO^3)^{-9}$

$OH^{-1}$

$SO_4^{2-}$

$Pt^+4$

SO^{$4^{2-}$}

N^-3

S^-2

CN^-1

It is simple, electronegative and basic radical.

It is simple, electronegative and acidic radical.

It is compound, electronegative and basic radical.

It is compound, electronegative and acidic radical.

Hydroxide

Peroxide

Argentic

Arsenate

Tin

Platinum

Arsenic

Gold

Compound consists of two atoms, i.e. sodium and carbonate.

Valency of carbonate in the compound is - 2.

Two different elements form this compound.

Valency of sodium in sodium carbonate is + 2.

$P_3O_2$

$2PO_3$

$P_2O_3$

$3PO_2$

$P_4O_10$