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प्रश्न
Write down the names of the particles represented by the following symbols and explain the meaning of superscript and subscript numbers attached.
`""_1"H"^1`, `""_0"n"^1`,`""_(-1)"e"^0`
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उत्तर
| Mass | Charge | |
| Proton | 1.672 × 10<sup>- 24</sup>g | Positive |
| Electron | 9.108 × 10<sup>- 28</sup>g | Negative |
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संबंधित प्रश्न
Fill in the blank
Neutrons are .......................... particles having mass equal to that of protons.
Give the following a suitable word/phrase.
The sum of the number of protons and neutrons of an atom.
Multiple Choice Questions
number of valence electrons present in magnesium is
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
WRITE SHORT ANSWER
Describe a discharge tube.
ANSWER IN DETAIL
Name the three subatomic particles. How are they different from each other ?
Compare an electron and a proton in respect of mass and charge.
Name the three fundamental particles of an atom.
Define the term Mass number.
Define the term Nucleons.
