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Chemistry LibreTexts

Answers to Periodic Table and Simple Ionic Compounds

  • Page ID
    14697
    1. Complete the following Table:

    Symbol

    Atomic Number

    Mass Number

    Number of Protons

    Number of Neutrons

    Number of Electrons

    Net Charge

    \(\mathrm{^{34}_{16}Se^{2-}}\)

    16

    34

    16

    18

    18

    -2

    \(\mathrm{^{51}_{23}V^{3+}}\)

    23

    51

    23

    28

    20

    +3

    \(\mathrm{^{40}_{20}Ca^{2+}}\)

    20

    40

    20

    20

    18

    +2

    1. Would you expect each of the following atoms to gain or lose electrons when forming ions? What ion is the most likely in each case?
    1. K should lose one electron to form K+
    2. F should gain one electron to form F
    3. Ca should lose two electrons to form Ca2+

    1. Fill in the following table:

    Name

    Symbol

    Group

    Period

    Metal, nonmetal or metalloid?

    transition metal or main group?

    sodium

    Na

    1

    3

    metal

    main group

    iron

    Fe

    8

    4

    metal

    transition metal

    oxygen

    O

    16

    2

    nonmetal

    main group

    1. Give the formulas for the ionic compounds made of the following ions:
    1. ScBr3
    2. K2O
    3. CaI2
    4. Cr2S3
    5. RbF
    6. MgO
    7. K3N
    8. SrF2
    9. Al2S3
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