atoms and molecules

THE CHEMICAL FORMULAE OF CALCIUM BUCARBONATE

How many times an atom of sulphur is heavier than an atom of carbon?

Which molecule has an atomicity of 4?

A group of atoms carrying a fixed charge on them is called

The combining power of an element is known as its …

Elements are represented by symbols and molecules by

The number of atoms present in one molecule of the substance is called its ……

What do the species ³A₁ and ³B₂ represent?

In Rutherford experiment α- particle has charge equal to

Which of the following statement is not correct? 1. Atoms are neutral 2. Atoms are basic units of matter 3. Atoms aggregate to form large molecules 4. Atoms exist independently