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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.
    • CENGAGE CHEMISTRY ENGLISH-ATOMIC STRUCTURE-Exercises Single Correct
    1. Atomic mass of an element is not neccessurity a whole number because

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    2. Which of the following properties of an element is a whole number ?

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    3. Which of the following sets of quantum number is allowable

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    4. Which of the following is associated with the orbital designated by n...

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    5. An isotone of (32)Ge^(36) is i. (32)Ge^(77) ii. (33)As^(77) iii. (3...

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    6. The transition of electron in if atom that will emit maximum energy is

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    7. The limiting line Balmer series will have a frequency of

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    8. The fundamental particle which are responsible for leping nucless to...

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    9. Which of the following is not acharacteristic of plack's quentum th...

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    10. Which of the following configuration is incorrect ?

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    11. Which of the following set of quantum numbers is an impossible arrang...

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    12. Which of the following statement about quantum number is wrong ?

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    13. Bohr's model of atom is not in agrement with

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    14. If the energy of electron in H atom is given by expression - 1312 n^(...

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    15. For which of the following electron distribution in ground state the P...

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    16. Which of the following orbital does not make sense?

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    17. Which of the following sets of quantum number is not possible

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    18. The possible sub-shell in n = 3 energy shell are

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    19. In the Schrodingers wave equation spi repressents

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    20. Heisenberg's uncertainty principal rules out the exact simultaneous ...

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