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प्रश्न
Fill in the blank
Neutrons are .......................... particles having mass equal to that of protons.
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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.
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
Name three fundamental particles of the atom. Give the symbol with charge, on each particle.
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
FILL IN THE BLANK
The γ-rays are............................ radiations, like light.
WRITE SHORT ANSWER
What is an atom?
Define the term Nucleons.
If an atom ‘A’ has an atomic number of eleven, state the number of protons and electrons it contains.
