Lis an element in the period 4 of the periodic table. l forms a chloride with the formula lcl2. the formula of the sulphate of l is a. l2so4. b. l(so4)2. c. lso4. d. l2(so4)3.

Answer:     c. lso₄======since cl has an ion charge of -1, the formula    tells us that l has an ion charge of +2 because we needed two chloride ions to fully empty out the valence shell of l, hence the 1: 2 ratio of l to cl.  each chloride ion needs only 1 electron to fully fill their valence shells.since so₄ has an ion charge of -2, it will accept two electrons to get a full valence shell. we established that l has an ion charge of +2. these charge numbers are the same; l will provide the two electrons needed. it's a 1: 1 ratio between l and so₄the formula would therefore be lso₄

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