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Question

Arrange the following elements in the increasing order of their metallic character Mg,Ca,K,Ge,Ga


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Solution

Trend of metallic character:

  • Metallic character decreases across a period on moving from left to right. in the periodic table.
  • This occurs as a result of an atom's increasing amount of electrons and protons as it moves from left to right in a period.
  • Due to the increased nuclear force on the electrons, as a result, losing electrons becomes difficult.
  • It increases on moving down in the group in the periodic table.
  • One moving down the group, atomic radius increases, making things easier to lose electrons.
  • The element that have the most metallic character is FranciumFr.
  • The other elements that are metallic in nature are Sodium Na and Copper Cu.

Order of metallic character

  • The left side of the periodic table is where the majority of metallic or electropositive elements are located.
  • Gallium Ga and germanium Ge belong to the p-block, while potassium K, magnesium Mg, and calcium Ca are part of the s-block.
  • Compared to s-block elements, p-block elements are less metallic.
  • Due to its position in group 13 whereas germanium is a member of group 14, gallium is more metallic in germanium.
  • Since potassium is an alkali metal, it will be more metallic than magnesium and calcium.
  • Calcium will be more metallic than magnesium since it belongs to group 4's period 4, whereas magnesium belongs to group2's period 3.
  • The increasing order of the metallic character is:

Ge<Ga<Mg<Ca<K


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