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Question

The valency of an element can be found from the electronic configuration of its atom write the electronic configuration of the following elements and, hence, their valency as well as the formulae of its chlorides and oxides

Li37


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Solution

Electronic configuration — The distribution of an electron in a given shell or orbitals is considered an electronic configuration

  • It also predicts whether the element is metal, non-metal, metalloids, and noble gas
  • It is based on atomic number
  • Electronic configuration of the given element [Li] is 2,1

Chlorides — when any metal reacts with a chlorine atom then it forms chlorides.

  • when Lithium reacts with chlorine forms Lithium chloride I:e LiCl.

Oxides — when any metal reacts with an oxygen atom then it forms oxides.

  • When Lithium reacts with oxygen forms Lithium oxide I:e Li2O

Thus, the Electronic configuration Li 2,1, And their chloride formula is LiCl, and their oxides formula is Li2O


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