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प्रश्न
Fill in the blank
Neutrons are .......................... particles having mass equal to that of protons.
उत्तर
Neutrons are neutral particles having mass equal to that of protons.
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संबंधित प्रश्न
Write true or false for the following statement
The maximum number of electrons in the first shell can be 8.
Write true or false for the following statement
The central pad of the atom is called nucleus.
Name three fundamental particles of the atom. Give the symbol with charge, on each particle.
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 ?
State its one drawback of Rutherford’s atomic model.
Define the term Nucleons.
If an atom ‘A’ has an atomic number of eleven, state the number of protons and electrons it contains.
Select the correct answer from the choice in the bracket to complete the sentence:
An element ‘X’ has six electrons in its outer or valence shell. Its valency is __________.
