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The number of atoms in 52 u of He is:...

The number of atoms in 52 u of He is:

A

`3.1 xx 10^25`

B

`7.8 xx 10^23`

C

`13`

D

`103`

Text Solution

Verified by Experts

The correct Answer is:
D
4 amu of He = 1 atom
53 amu of He ` = 1/4 xx 52 = 13 ` atoms
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Knowledge Check

  • The number of atoms in 52 u of He are

    A
    13
    B
    `13xx6.022xx10^(23)`
    C
    52
    D
    `4xx6.022xx10^(23)`

  • In an atom, the mass number of an atom is equal to the number of ____.

    A
    nucleons
    B
    protons
    C
    electrons
    D
    Neutrons

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