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Justify the statement 'atomic number of ...

Justify the statement 'atomic number of an element is equal to the number of electrons in a neutral atom only and not in anion'.

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In neutral atom, No. of protons = No. of electrons = Atomic number An anion is formed by gain of one or more electrons by an atom. Therefore, anion contains more electrons than neutral atom or in other words number of electrons in anion is greater than atomic number (the number of protons).
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Knowledge Check

  • The atomic number of an element is equal to the number of

    A
    protons
    B
    neutrons
    C
    electrons
    D
    deutrons

  • The atomic number of an element is always equal to

    A
    Number of neutrons in nucleus
    B
    Half of the atomic weight
    C
    Electrical charge of the nucleus
    D
    Weight of the nucleus

  • The atomic number of an element X is 19. The number of electrons in its ion X^(+) will be

    A
    18
    B
    19
    C
    20
    D
    21

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    The atomic number of an element is 25. Write the number of s and p electrons present in it.

    The atomic number of an element Y is 17. The number of electrons in its ion Y^(-) will be:

    The atomic number of an element X is 19. The number of electrons in its ion X^(+) will be

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