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प्रश्न
Compare a proton and a neutron in respect of mass and charge.
उत्तर
Proton: The relative mass of a proton is 1u and its absolute mass is approximately 1.602 × 10–24g. Charge on a proton is +1.
Neutron: Relative mass of a neutron is 1u and its absolute mass is approximately 1.602 × 10–24g . Charge on a neutron is zero.
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संबंधित प्रश्न
Write true or false for the following statement
The central pad of the atom is called nucleus.
Multiple Choice Questions
number of valence electrons present in magnesium is
What are the observations of the experiment done by Rutherford in order to determine the structure of an atom?
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.
Which of the following scientists observed that cathode rays consists of negatively charged particles?
- John Dalton
- J J Thomson
- James Chadwick
- Democritus
ANSWER IN DETAIL
Write a note on valence shell.
Fill in the blank of the following statement :
The electron has _________ charge, the proton has _________ charge, and the neutron has _________ charge.
State the location of electrons, protons and neutrons in an atom.
Name the sub-atomic particle whose charge is 0.
State how electrons are distributed in an atom. Explain in brief the rules which govern their distribution.
