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प्रश्न
Give the following a suitable word/phrase.
The sum of the number of protons and neutrons of an atom.
उत्तर
Mass number
APPEARS IN
संबंधित प्रश्न
What are the observations of the experiment done by Rutherford in order to determine the structure of an atom?
FILL IN THE BLANK
In an atom, the last shell containing electrons is called its..................shell.
Tick the most appropriate answer
β-particles are actually a stream of
- protons
- electrons
- neutrons
- none of these
TRUE \ FALSE
Electrons are present in the nucleus.
ANSWER IN DETAIL
Write a note on valence shell.
Name the negatively charged particle present in the atoms of all the elements.
Compare an electron and a proton in respect of mass and charge.
Name the sub-atomic particle whose charge is 0.
Name the three fundamental particles of an atom.
State its one drawback of Rutherford’s atomic model.
