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Isotopes and Isobars

Which of the ...

Question

Which of the following is a limitation of the law of constant composition is not applicable?

A

When same isotopes of an element take part in the formation of a particular compounds

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B

When different isotopes of different elements take part in the formation of a particular compound

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C

When different isotopes of an elements take part in the formation of a particular compound

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D

None of above

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Solution

The correct option is C When different isotopes of an elements take part in the formation of a particular compound
limitation of the law of constant composition is "When different isotopes of an elements take part in the formation of a particular compound "

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Q. The atoms of various isotopes of a particular element differ from each other in the number of:

Isotopes are the atoms of the same element; they have the same atomic number but different mass numbers. Isotopes have a 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

\frac{m \times a + n \times b}{m + n}

Different isotopes of the same element have the same position in the periodic table. The elements which have single isotope are called monoisotopic elements. Greater is the percentage composition of an isotope, more will be its abundance in nature.

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Isotopes and Isobars

Standard VIII Chemistry

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