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The atomic number of an element is 9. It...

The atomic number of an element is 9. It has 10 neutrons. Find the element from the periodic table. What will be its mass number?

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Knowledge Check

  • The most electronegative element of the periodic table is _______

    A
    Iodine
    B
    Flourine
    C
    Chlorine
    D
    Oxygen

  • The number of elements in the first periods of the modern periodic table is ________

    A
    2
    B
    8
    C
    18
    D
    32

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    An atom of an element has 19 electrons. What is the total number of p-orbital?

    An atom of an element contains 35 electrons and 45 neutrons. Deduce. the number of protons.

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