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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
TRUE \ FALSE
Elements having a tendency to accept electrons are called metals
State Dalton’s atomic theory.
An atom has 13 protons and 14 neutrons.
How many electrons would be present in this 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.
What is the mass number of X?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the atomic numebr of X ?
Fill in the blank
A charged particle is called an _____
Fill in the blank
An excess of electrons produces a ________ charge.
How many times is a proton heavier than an electron?
For the symbols H, D and T, write the subatomic particles (protons, neutrons and electrons) found in each one of them.
Electron, proton, neutron are the types of ______ in an atom.
Compare:
Chlorine atom and chloride ion, with respect to
Atomic structure
Electrical state
Name the gas that.
Turns moist starch iodide paper blue black.
The smaller particles found in the atom is called ______.
Name the sub-atomic particles.
Define the following term with an example.
Compound
______ is the smallest particle of an element.
An element is composed of ______ atoms.
Atoms of different elements having ______ mass numbers, but ______ atomic numbers are called isobars.
Does the solubility of a substance change with temperature? Explain with the help of an example.
