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प्रश्न
Multiple Choice Questions
The outermost shell of an atom is known as
विकल्प
valency
valence electrons
nucleus
valence shell
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उत्तर
valence shell
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संबंधित प्रश्न
Mention briefly the salient features of Dalton’s atomic theory (five points)
FILL IN THE BLANK
Gases become good conductors of electricity under ........ (low/high) pressure and .............. (low/high) voltage electrical discharge.
Tick the most appropriate answer
β-particles are actually a stream of
- protons
- electrons
- neutrons
- none of these
WRITE SHORT ANSWER
Describe a discharge tube.
ANSWER IN DETAIL
What is the maximum number of electrons that L shell can accommodate ? Give reasons for your answer.
Name the negatively charged particle present in the atoms of all the elements.
Compare an electron, a proton and a neutron in respect of their relative masses and charges.
Compare a proton and a neutron in respect of mass and charge.
The particle not present in an ordinary hydrogen atom is :
Select the correct answer from the choice in the bracket to complete the sentence:
A ________ is a sub-atomic particle with no charge and unit mass.
