Isotopes of an element have
the same physical properties
different chemical properties
different atomic numbers
different number of neutrons
Rutherford’s alpha-particle scattering experiment was responsible for the discovery of
For the symbol $H$, $D$ and $T $ tabulate three sub-atomic particles found in each of them.
Describe Bohr’s model of the atom.
Explain with examples $(i)$ Atomic number, $(ii)$ Mass number. Give any two uses of isotopes.
If number of electrons in an atom is $8$ and number of protons is also $8$, then $(i)$ what is the atomic number of the atom ? and $(ii)$ what is the charge on the atom ?
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