help 1. write the complete chemical symbol for the ion with 14 protons 15 neutrons and 18 electrons 2. write the complete chemic

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1. write the complete chemical symbol for the ion with 14 protons 15 neutrons and 18 electrons
2. write the complete chemical symbol for the ion with 27 protons 32 neutrons and 25 electrons

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Mộc Miên 5 years 2021-08-18T04:04:34+00:00 1 Answers 39 views 0

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  1. trucchi
    0
    2021-08-18T04:05:52+00:00
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    Answer:

    a

    Explanation:

    The formation of ion occurs when an atom that is said to be neutral gains or losses electrons.

    At the time it gains electrons, it is regarded that a negative ion (anion) is formed.

    When it loses electron, it is regarded that a positive ion (cation) is formed.

    Atomic number = No of protons and electrons occurring in a neutral atom.

    Given that:

    Protons = 14

    electron = 18

    Net Charge = no of proton – no of electron

    = 14 – 18

    = -4

    Mass number = 14 + 15 = 29

    So, the chemical symbol = Si^{-4}

    For ion with

    27 proton, 32 neutrons and 25 electrons

    Net charge = 27 – 25

    = +2

    Mass number = 27 + 32 = 59

    Thus, the chemical symbol = Co^{+2}

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )