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प्रश्न
Write any two observations which support the fact that atoms are divisible.
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उत्तर
With the discovery of electrons and protons it was established that atom is divisible and is made up of negatively charged electrons and positively charged protons along with some neutral particles called neutrons.
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संबंधित प्रश्न
ANSWER IN DETAIL
State the postulates of the Dalton’s atomic theory.
Define:- Molecule
Write the names of the elements present in the following compound.
Common salt
Fill in the blank:
Atoms are _____
Define: Ions
Name two particles found inside the nucleus. What are they collectively called ?
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.
What is the mass number of X?
Fill in the blank
If an atom gains an electron, it is called an _______
Fill in the blank
A deficiency of electrons produces a ________ charge.
Write the full form of IUPAC.
What is the usual symbol for (a) and electron (b) a proton, and (c) a neutron?
Name the unit in which the radius of an atom is usually expressed.
What is an atom ? How do atoms usually exist ?
Electron, proton, neutron are the types of ______ in an atom.
The electron shell ______ is nearest to the nucleus.
Define the following term with an example.
Compound
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
The number of atoms present in a molecule is called its ______.
Atoms have a radius of the order ______.
