16.(i) Define the term atomic mass unit.(ii) Write the chemical formul

1.	16.(i) Define the term atomic mass unit.(ii) Write the chemical formulae of the following: F,-\(a) Magnesium Nitride(b) Ammonium Sulphate(ii) Write the atomicity of Phosphorus and Sulphur(iv) Find the number of Sodium and Sulphate ions in 14.2,Sulphate.[Na -23: S-32; O-16]
Answer» ans is na=59;S=95;O=16 The sum of total number of protons and electrons present in the nucleus of atom is called as atomic mass unit A unit of mass used to express atomic and molecular weights, equal to one twelfth of the mass of an atom of carbon 12 Magnesium nitride= Mg3N2Ammonium sulphate = (NH4)2So4

16.(i) Define the term atomic mass unit.(ii) Write the chemical formulae of the following: F,-\(a) Magnesium Nitride(b) Ammonium Sulphate(ii) Write the atomicity of Phosphorus and Sulphur(iv) Find the number of Sodium and Sulphate ions in 14.2,Sulphate.[Na -23: S-32; O-16]

Answer»

ans is na=59;S=95;O=16

The sum of total number of protons and electrons present in the nucleus of atom is called as atomic mass unit

A unit of mass used to express atomic and molecular weights, equal to one twelfth of the mass of an atom of carbon 12

Magnesium nitride= Mg3N2Ammonium sulphate = (NH4)2So4