As an atom is so small a particle that it cannot be seen or isolated ,therefore it is impossible to determine the actual mass of a single atom by weighing it. The problem was finally solved by Avogadro's hypothesis. If equal volumes of two different gases are taken under similar conditions of temperature and pressure and then weighted, the ratio of their masses will be … [Read more...] about Atomic and Molecular mass
gram atomic mass
Valency of ion
Question 1 Define the term valency? Question 2 What are monovalent ion.Give example? Question 3 What are divalent ion.Give example? Question 4 What are trivalent ion.Give example? Question 5 What do you mean by chemical formulae of a compound? Question 6 What are the steps to write chemical formulae of a compound? Question 7 What is gram atomic … [Read more...] about Valency of ion