What are elements of the group 1-A of Periodic Table called? Write 3 general properties of these elements. | web4study

What are elements of the group 1-A of Periodic Table called? Write 3 general properties of these elements.



Group 1A of Periodic Table:

The elements of group 1A are called Alkali metals. They are

Lithium Li

Sodium Na

Potassium K

Rubidium Rd

Caesium Cs

Francium Fr

Properties of group 1-A elements:

  • (i) They form water soluble bases e.g. NaOH and KOH and hence called Alkali Metals.
  • (ii) Their outer most shell has one electron and on reaction, they lose it to form univalent positive ions. E.g. Na+ or Kt
  • (iii) They are highly reactive metals, with low melting points.


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