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Q1.
Use the Periodic Table on page 2 to help you answer this question.
Give the name or symbol of
(a) the element in group 3 and period 4.

Answer :

BHARATHPARASAD577GO

Gallium is the element that belongs to the group 3 and the fourth period. Ga is symbol of Gallium.

  • The element gallium has an atomic number of 31.
  • While highly pure gallium is covered in a dazzling silvery colour, solid gallium is a blue-grey metal with an orthorhombic crystalline structure.
  • It is a crucial part of numerous semiconductors. Due to its capacity to transform power into light, it is additionally used in red LEDs (light emitting diodes).
  • Because of its high boiling point, it is perfect for recording temperatures that would cause a thermometer to vaporise.
  • From iron pyrites, zinc blende, germanite, and bauxite, this metal can be readily removed as a byproduct.
  • Because gallium is a corrosive chemical, it can cause serious skin and eye burns asse well as significant irritation.

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