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प्रश्न
Which of the following statement is always correct?
विकल्प
an atom has equal number of electrons and protons
an atom has equal number of electrons and neutrons
an atom has equal number of protons and neutrons
an atom has equal number of electrons, protons and neutrons
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उत्तर
An atom has equal number of protons and electrons
An atom always has equal number of protons and electrons in order to maintain electrical neutrality.
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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 sub-atomic particle with negative charge and negligible mass.
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)
WRITE SHORT ANSWER
Describe a discharge tube.
State whether the following statement is true or false :
The anode rays obtained from all the gases consist of positively charged particles called protons.
The particle not present in an ordinary hydrogen atom is :
Define the term Nucleons.
Select the correct answer from the choice in the bracket to complete the sentence:
A ________ is a sub-atomic particle with no charge and unit mass.
What is meant by the term subatomic particles?
