Structure of the atom
Explain with examples (i) Atomic number, (ii) Mass number,
(iii) Isotopes and iv) Isobars. Give any two uses of isotopes.
Cost of production and concept of revenue
What do you mean by short run ?
Cost of production and concept of revenue
What do you mean by fixed cost ? How is the fixed cost curve ?
Structure of the atom
Define valency by taking examples of silicon and oxygen.
Structure of the atom
Summarise the rules for writing of distribution of electrons in
various shells for the first eighteen elements.
Structure of the atom
Compare all the proposed models of an atom given in this
chapter.
Cost of production and concept of revenue
What do you mean by marginal Revenue?
Structure of the atom
Describe Bohr’s model of the atom.
Structure of the atom
What are the limitations of Rutherford’s model of the atom?
Structure of the atom
What are the limitations of J.J. Thomson’s model of the atom?
