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Question

Arrange the following elements in the order of their decreasing metallic character: Na,Si,Cl,Mg,Al


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Solution

Metallic character:

  • The term "metallic character" refers to a group of chemical properties linked with metals.
  • Most metals are malleable and ductile, which means they can be deformed without breaking.
  • The metallic character in the table reduces as you move from left to right across a period.
  • The metallic nature increases as you move down the periodic table.

Arranging in decreasing order of metallic character :

  • The propensity of an element to shed electrons and generate positive ions or cations is referred to as its metallic character.
  • The most electropositive elements are alkali metals.
  • The propensity of an element to receive electrons and create negative ions or anions is referred to as its non-metallic character.
  • The most electronegative elements are chlorine and oxygen.
  • In its valence shells, sodium has one electron, magnesium has two, aluminum has three, and chlorine has seven.
  • Hence Sodium has the most metallic qualities, followed by magnesium, aluminum, and chlorine, which have non-metallic properties.
  • Moving right reduces the metallic characteristic with time.
  • As a result, the order is Na>Mg>Al>Si>Cl.

The order of their decreasing metallic character is Na>Mg>Al>Si>Cl.


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