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Atomic mass of an element is not necces...

Atomic mass of an element is not neccessurity a whole number because

A

It contains electrons ,photons and neutrons

B

It excists in allotropic forms

C

It containts isotopes

D

Atom are no longer indivisible

Text Solution

Verified by Experts

The correct Answer is:
C
Atomic number
` = ((% "Abundance" ) xx ("isotope") + % "of" ("isotope")_(2))/(100)`
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Knowledge Check

  • Atomic number of an element indicates

    A
    the number of electrons in the nucleus
    B
    the number of neutrons in the nucleus
    C
    the number of protons in the nucleus
    D
    valency of an element.

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