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प्रश्न
What is meant by the term subatomic particles?
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उत्तर १
“Particles into which an atom is divided are called subatomic particles.” Protons, electrons, neutrons.
उत्तर २
Subatomic particles: A subatomic particle is a structural and functional unit of matter. That means all the matters are made up of these fundamental particles. According to modern atomic theory, an atom has a nucleus, which is present in its centre or core. These nucleus contain subatomic particles like protons and neutrons.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
Neutrons are .......................... particles having mass equal to that of protons.
FILL IN THE BLANK
The γ-rays are............................ radiations, like light.
Tick the most appropriate answer.
In 1908, R A Millikan found the charge of an electron to be
- 1.6 x 10-19 C
- 1.6 x 10-15 C
- 1.4 x 10-19 C
- 1.6 x 19-16 C.
ANSWER IN DETAIL
What is the maximum number of electrons that L shell can accommodate ? Give reasons for your answer.
Fill in the blank of the following statement :
The electron has _________ charge, the proton has _________ charge, and the neutron has _________ charge.
Why is an atom neutral inspite of the presence of charged particles in it?
Compare an electron, a proton and a neutron in respect of their relative masses and charges.
The particle not present in an ordinary hydrogen atom is :
Define the term Mass number.
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 __________.
