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प्रश्न
In all atoms of an element
विकल्प
the atomic and the mass number are same.
the mass number is same and the atomic number is different.
the atomic number is same and the mass number is different
both atomic and mass numbers may vary
उत्तर
The atomic and the mass number are same.
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संबंधित प्रश्न
ANSWER IN DETAIL
Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?
Define:- Atom
Write the names of the elements present in the:-
Acetic acid
Write the names of `"Na"_3"PO"_4` compounds :
Fill in the blank
An ion with positive charge is called ______
Fill in the blank
An ion with negative charge is called _______
Give the charge and the mass of an electron, proton and neutron present in an atom ?
Name three non-metals/radicals which have valency -1, -2, and -3.
What does the word ‘atom’ mean?
State Dalton’s atomic theory.
Fill in the blank
A charged particle is called an _____
What value has been given to the mass of this reference atom ?
Is it possible to see atoms these days ? Explain your answer.
How many atoms are there in exactly 12 g of carbon-12 element ? (C = 12 u)
Which has more atoms, 50 g of aluminium or 50 g of iron ? Illustrate your answer with the help of calculations.
(Atomic masses : Al = 27 u ; Fe = 25 u)
The electron shell ______ is nearest to the nucleus.
Rewrite the given sentence in correct form.
Elements contain two or more kind of atoms and compounds contain only one kind of atom.
Draw the structure of an atom and explain the position of the sub-atomic particles.
Define the term ions or radicals.
Atoms of different elements having the same number of ______ are called isotones.
