Thursday 24 December 2015

STRUCTURE OF ATOM HOLIDAY H.W





CLASS - XI CHEMISTRY (Structure of Atom)


Topic:-Atomic Models




1.
Name the scientist who first gave the atomic model.

2.
What is an isotope?

3.
What are isobars?

4.
What are isotones?

5.
What is an atomic number?

6.
What is a mass number?


7.
Give the main features of Thomson’s Model for an atom.

8.
Give the drawbacks of J.J. Thomson’s experiment.

9.
What did Rutherford conclude from the observations of a - ray


scattering experiment?


10.
Why Rutherford’s model could not explain the stability of an atom?