Name two elements in each case:

 (i) Alkali metals                         
 (ii) Akaline earth metals
 (iii) halogens
 (iv) Inert gas
 (v) Transition element
  (vi) Lanthanides
 (vii) Actinides
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1 Answers

(i) Alkali metals  Sodium and   potassium                
(ii) Akaline earth metals  Calcium and magnesium
(iii) halogens   Chlorine and bromine
(iv) Inert gas   Neon and Argon
(v) Transition element   Iron and Cobalt
(vi) Lanthanides   Cerium and Europium
(vii) Actinides   Uranium and Neptunium

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