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प्रश्न
Compare an electron, a proton and a neutron in respect of their relative masses and charges.
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उत्तर
Relative masses :relative mass of a neutron is 1u, that of a proton is also 1u and that of an electron is (1/1840) u.
Charge: Charge of a proton is +1, that of an electron is –1 and that of a neutron is zero.
APPEARS IN
संबंधित प्रश्न
Write true or false for the following statement
The central pad of the atom is called nucleus.
Give the following a suitable word/phrase.
The sum of the number of protons and neutrons of an atom.
Mention briefly the salient features of Dalton’s atomic theory (five points)
Explain the rule with example according to which electrons are filled in various energy levels
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
TRUE \ FALSE
Electrons are present in the nucleus.
ANSWER IN DETAIL
Name the three subatomic particles. How are they different from each other ?
Why is an atom neutral inspite of the presence of charged particles in it?
Compare a proton and a neutron in respect of mass and charge.
Explain how the modern atomic theory contradicted Dalton’s atomic theory.
