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Isotopes are atoms having....

Isotopes are atoms having.

A

Same number of protons but different number of neutrons

B

Same number of neutrons but different number of protons.

C

Same number of protons and neutrons

D

None of the above

Text Solution

Verified by Experts

The correct Answer is:
A
(a) For isotopes `Z` is same and `A` is different. Therefore the number of neutrons `A - Z` will also be different.
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Knowledge Check

  • Isotopes have

    A
    Same number of protons
    B
    Same number of neutrons
    C
    Different number of electrons
    D
    Different atomic numbers

  • Isotopes have

    A
    same physical and chemical properties
    B
    same physical properties but different chemical properties
    C
    same chemical properties but different physical properties
    D
    different physical and chemical properties.

  • Isotopes are the atoms of same element, they have same atomic number but different mass numbers. Isotopes have different number of neutrons in their nucleus . If an element exists in two isotopes having atomic masses 'a' and 'b' in the ratio m:n, then average atomic mass will be (mxxa+nxxb)/(m+n) Different isotopes of same element have same position in the periodic table. the elemens which have single isotope are called monoisotropic elements. Greater is the percentage composition of an isotope, more will be its abundance in nature. The ratio of mass of .^(12)C atom to that of an atom of element X(whose atomicity is four) is 1:9. the molecular mass of element X is:

    A
    480 g `"mol"^(-1)`
    B
    `432g "mol"^(-1)`
    C
    `36 g "mol"^(-1)`
    D
    `84g "mol"^(-1)`

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