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प्रश्न
Name three fundamental particles of the atom. Give the symbol with charge, on each particle.
उत्तर
The fundamental particles of the atom are: electrons, protons and neutrons.
| Particle | Symbol | Charge |
| electron | e– | -1 or 1.602 x 10-19 C. Where -1 represent its one unit negative electrical charge |
| proton | p+ | + 1 or 1.602 x 10-19 C. Where +1 represents one unit +ve electrical charge. |
| neutron | no | 0 |
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संबंधित प्रश्न
Fill in the blank
The outermost shell of an atom is known as............................
Give the following a suitable word/phrase
Arrangement of electrons in the shells of an atom.
Give the following a suitable word/phrase.
The smallest unit of an element which takes part in a chemical reaction.
Tick the most appropriate answer
β-particles are actually a stream of
- protons
- electrons
- neutrons
- none of these
WRITE SHORT ANSWER
What is the charge on a neutron ?
WRITE SHORT ANSWER
What is the number of neutrons present in a potassium atom ?
ANSWER IN DETAIL
Write a note on valence shell.
Compare an electron, a proton and a neutron in respect of their relative masses and charges.
Draw a neat labelled diagram representing an atom. Name the three sub-atomic particles in the atom and represent them symbolically showing the mass and charge of each. State where the sub-atomic particles are present in the atom.
Select the correct answer from the choice in the bracket to complete the sentence:
Magnesium atom with electronic configuration 2, 8, 2 achieves stable electronic configuration by losing two electrons, thereby achieving stable electronic configuration of the nearest noble gas _______.
