Transcription of 2 ATOMIC STRUCTURE
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2 ATOMIC STRUCTURE
Notes 45 ATOMIC StructureCHEMISTRYMODULE - 2 ATOMIC STRUCTURE andChemical Bonding2 ATOMIC STRUCTUREC hemistry has been defined as the study of matter in terms of its STRUCTURE ,composition and the properties. As you are aware, matter is made up of atoms,and therefore an understanding of the STRUCTURE of atom is very important. Youhave studied in your earlier classes that the earliest concept of atom ( smallestindivisible part of matter ) was given by ancient Indian and Greek philosophers(600-400 BC). At that time there were no experimental evidence. The origin ofthe concept of atom was based on their thoughts on What would happen if wecontinuously keep dividing matter . John Dalton revived the concept of atom inthe beginning of nineteenth century in terms of his ATOMIC theory whichsuccessfully explained the laws of chemical combination.
x explain wave particle duality of matter and radiation; x formulate Heisenberg s uncertainty principle; x explain the need for quantum mechanical model; x draw probability pictures of an electron in an atom; x list quantum numbers and discuss their significance; x draw the shapes of s, p and d orbitals; x recognize nodal plane;
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