Chemistry - 9 Chapter - 3
Atomic Structure
Test - 9


1. The size of an atom depends upon the size of its ________.




2. What was not clearly explained in Rutherfords atomic model?




3. Who presented a solution of the problems in 1913 encountered in Rutherfords atomic model.




4. Energy in first orbit (nearest to nucleus) is ________?



5. When an electron jumps from higher energy orbit to lower energy orbit the energy is ________ in the form of ____________.




6. When an electron jumps from a lower energy orbit to higher energy orbit the energy is absorbed.


7. What is the unit of energy emitted or absorbed when electron jump from one orbit to another.




8. Quantum number of the least energy orbit is 1 and 3rd orbit is _______.




9. Orbit of atom are numbered as?



10. Orbit number M contains _______ electrons.




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