UNIT 2-MATTER: CHANGES IN INORGANIC SUBSTANCES 2.1 MATTER, ATOMIC STRUCTURE & PERIODICITY. 2.2 PRIMARY & SECONDARY CHEMICAL BONDING......n 2.3 STRUCTURE & SHAPES OF MOLECULES............ 2.4 PROPERTIES OF SOLID & STATE OF MATTER .........17 18 .20 23 25
Write a summary notes on this unit topic.​