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Define the terms atomic number and mass ...

Define the terms atomic number and mass number how are they related to each other? In which case the atom of the element has same number of protons and electrons?

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Define atomic number and mass number .

An atom contains the same number of protons and electrons.

Knowledge Check

  • Which of the following elements has same number of protons, electrons and neutrons?

    A
    Al
    B
    Mg
    C
    P
    D
    Cl

  • A heavy element has atomic number X and mass number Y . Correct relation between X and Y

    A
    `X gt Y`
    B
    `X lt Y`
    C
    `X=Y`
    D
    `X=Z (1-Y)`

  • The atom of which of the following elements has the highest number of unpaird electrons

    A
    `._(25)Mn`
    B
    `._(24)Cr`
    C
    `._(96)Cm`
    D
    `._(26)Fe`

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    The element with same atomic number and mass number

    Are the number of protons and electrons in an atom equal ?

    Mass number is the sum of the number of protons and neutrons in an atom.

    Define atomic number of an element. How is it related to the mass number ?

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