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4.4.1: Practice Ions

  • Page ID
    236035
  • Exercise \(\PageIndex{1}\)

    For each element listed, tell whether it forms a cation or an anion.  Then tell whether the charge is predictable or variable.  If it is predictable, give the charge.

    a)  O

    b)  Li

    c)  Cl

    d)  Ca

    e)  Ti

    f)  Se

    g)  Fe

    h)  P

    i)  K

    j)  Ag

    Answer a

    anion, predictable, –2

    Answer b

    cation, predictable, +1

    Answer c

    anion, predictable, –1

    Answer d

    cation, predictable, +2

    Answer e

    cation, variable

    Answer f

    anion, predictable, –2

    Answer g

    cation, variable

    Answer h

    anion, predictable, –3

    Answer i

    cation, predictable, +1

    Answer j

    cation, predictable, +1

    Exercise \(\PageIndex{1}\)

    Which elements in the list below do not usually form ions at all?

    Na   Ne   N   C   Ca   Br   B   Si   S   Al

    Answer

     Ne  C   B   Si 

     

     

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