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प्रश्न
Give scientific reason.
All the mass of an atom is concentrated in the nucleus.
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उत्तर
All the mass of an atom is concentrated in the nucleus because the atom contains three subatomic particles like electron, proton and neutron. Out of which, the nucleus present at the centre of an atom contains two subatomic particles that are protons and neutrons, and the mass of the nucleus is the sum of the mass of protons and neutrons located at the centre of an atom.
संबंधित प्रश्न
If bromine atom is available in the form of, say, two isotopes `""_35^79Br (49.7%)" and """_35^81Br (50.3%)`, calculate the average atomic mass of bromine atom.
TRUE \ FALSE
Elements combine in definite proportions to form compounds.
ANSWER IN DETAIL
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Write the names of the elements present in the:-
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A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the atomic numebr of X ?
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Fill in the following blanks with suitable words :
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Define the following term with an example.
Compound
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1 mole of Gold and Silver contain same number of atoms.
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