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प्रश्न
The smallest particle of matter that can exist by itself is ______.
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उत्तर
The smallest particle of matter that can exist by itself is atom.
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संबंधित प्रश्न
Why is it not possible to see an atom with naked eyes?
The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of isotopes `""_8^16X" and """_8^18X` in the sample?
ANSWER IN DETAIL
State the postulates of the Dalton’s atomic theory.
Write the names of `("NH"_4)_2"SO"_4` compounds:
Write the names of `"Ca"("NO"_3)_2` compounds :
Fill in the blank
An ion with negative charge is called _______
What does an atom consist of ? Explain.
Give the charge and the mass of an electron, proton and neutron present in an atom ?
Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is such a particle called ?
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
Name the three subatomic particles present in an atom.
State two observations which show that atom is not indivisible.
Give brief information of three subatomic particles with reference to electrical charge, mass and location.
Give scientific reason.
All the mass of an atom is concentrated in the nucleus.
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.
K: Potassium:: C: ______.
Draw the structure of an atom and explain the position of the sub-atomic particles.
Atoms of different elements having ______ mass numbers, but ______ atomic numbers are called isobars.
