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Structure of th...

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  • Question 1
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    What is name given to the number of protons in the nucleus of the atom?

  • Question 2
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    There are 14 protons and 13 neutrons in the nucleus of an element. What is its mass number?

  • Question 3
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    Nitrogen atom has an atomic mass of 14 u and has 7 protons in its nucleus. How many neutrons does it have?

  • Question 4
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    Atomic number of an atom is defined as:

  • Question 5
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    Which of the two will be chemically more reactive - an element X with atomic number 16 or an element Y with atomic number 17?

  • Question 6
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    The atom of which element has twice as many electrons in its second shell as there are in the first shell:

  • Question 7
    1 / -0

    The two isotopic forms of chlorine with masses 35 u and 37 u occur in the ratio of:

  • Question 8
    1 / -0

    Find the incorrect pair:

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