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प्रश्न
Write true or false for the following statement
The central pad of the atom is called nucleus.
पर्याय
True
False
उत्तर
True
APPEARS IN
संबंधित प्रश्न
Name three fundamental particles of the atom. Give the symbol with charge, on each particle.
FILL IN THE BLANK
The γ-rays are............................ radiations, like light.
Tick the most appropriate answer.
Which of the following scientists observed that cathode rays consists of negatively charged particles?
- John Dalton
- J J Thomson
- James Chadwick
- Democritus
TRUE \ FALSE
Electrons are present in the nucleus.
WRITE SHORT ANSWER
Describe a discharge tube.
WRITE SHORT ANSWER
Name the isotopes of hydrogen.
Define the term Mass number.
Define the term Nucleons.
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:
An element ‘X’ has six electrons in its outer or valence shell. Its valency is __________.
