Chemistry - 9 Chapter - 3
Atomic Structure
Test - 15

1. Principal energy level can be regarded as shell


2. Melting point of light water is 3.82oC.


3. Electronic configuration of oxygen atom is 2,7,2


4. All isotopes of an element have same electronic configuration


5. Sommer feld experimentally proved that orbits are circular in shape


6. Greek philosophers named the smallest particle of matter as _____________.


7. Atoms of an element are similar, they possess same__________ and same properties.


8. An atom can be broken and __________ can be obtained


9. __________ electrodes are used in discharge tube.


10. Cathode rays ______________ the temperature of the body on which they fall.


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