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प्रश्न
Electron, proton, neutron are the types of ______ in an atom.
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उत्तर
Electron, proton, neutron are the types of subatomic particles in an atom.
संबंधित प्रश्न
TRUE \ FALSE
Neils Bohr gave the theory to explain the arrangement of protons in an atom.
TRUE \ FALSE
Cathode rays are a stream of fast moving particles that travel in random directions.
Write the names of `"Ca"("NO"_3)_2` compounds :
Define: Ions
Define: Chemical bond
Who originated the word ‘atom’ ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is such a particle called ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
Does the particle have an excess of electrons or a deficiency of electrons ?
Dalton's atomic theory says that atoms are indivisible. Is this statement still valid ? Give reasons for your answer.
An atom of an element X may be written as `""_9^4"X"`
(a) What does the figure 9 indicate?
(b) What does the figure 4 indicate?
(c) What is the number of protons in atom X?
(d) What is the number of neutrons in atom X?
(e) What is the number of electrons in atom X?
(f) How many electrons are there in the outermost shell of an atom of element X?
(g) Write the symbol of ion formed by an atom of element X.
Name the gas that.
Turns moist starch iodide paper blue black.
Define the following term with an example.
Element
Rewrite the given sentence in correct form.
Elements contain two or more kind of atoms and compounds contain only one kind of atom.
Name the sub-atomic particles.
Define the following term with an example.
Compound
Define the following term with an example.
Metal
The number of atoms present in a molecule is called its ______.
Which of the following has maximum number of atoms?
Dalton’s atomic theory successfully explained
(i) Law of conservation of mass
(ii) Law of constant composition
(iii) Law of radioactivity
(iv) Law of multiple proportions
Atomic models have been improved over the years. Arrange the following atomic models in the order of their chronological order
- Rutherford’s atomic model
- Thomson’s atomic model
- Bohr’s atomic model
