CHAPTER 4 STRUCTURE OF THE ATOM (SET-1)

Questions in this test

1. Rutherford's ‘ $\alpha $- particles scattering experiment’ showed for the first time that the atom has _________.
2. The radius of the first Bohr orbit of Hydrogen-atom is r. The radius of the third orbit will be _________.
3. Name the element that has the same mass number and atomic number?
4. The energy is absorbed when an electron jumps from _________
5. What are cathode rays?
6. The Specific charge of electrons equal to _________
7. What is the ratio of the specific charge of a proton and - particle?
8. The first model of an atom was given by whom?
9. Which scientist gave the concept of stable energy levels around the nucleus?
10. Which property of an element determines its chemical behaviour?