QUESTION: Write any five properties of the elements of GROUP I-A , GROUP II-A and GROUP III-A.
GROUP I-A
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  1. Li, Na, K, Rb, Cs, Fr are the elements of group I-A.
  2. All the elements of group I-A contain one electron in their outermost shell.
  3. They are univalent.
  4. Elements of group I-A are metals.
  5. They have the largest atomic size.
  6. They easily loose electron.
  7. They have low ionization potential (I.P) and are very electropositive.
  8. They form ionic compounds.
  9. They are very reactive element
  10. They are electropositive elements.
  11. They are called alkali metals.
  12. They are good reducing agents.
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GROUP II-A
  1. Be, Mg, Ca, Sr, Ba and Ra are the members of this group.
  2. They have 2 electrons in their outermost shell.
  3. All these elements are metals.
  4. They are also known as alkaline earth metals.
  5. They are reactive elements.
  6. They form ionic compounds by loosing two electrons.
  7. They are electropositive elements.
  8. They form ionic compounds.
  9. They are also good reducing agents.
GROUP III-A
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  1. B, Al, Ga, In and Tl are the elements of group III-A.
  2. They have three electrons in their outermost shell.
  3. Except Boron, all the elements are metals.
  4. Boron is a metalloid.
  5. They are electropositive elements.
  6. They are chemically reactive.
  7. They have tendency to form covalent compounds.
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