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Friday 10 August 2012

ELEMENTS(1-5) DISCOVERED BY



who discovered Hydrogen?   

 Henry Cavendish

who discovered Helium? 

 Joseph Norman Lockyer, Pierre Jules César Janssen

who discovered lithium?

Johan August Arfwedson

who discovered beryllium

 Louis Nicolas Vauquelin

who discovered boron ?

  Louis Jacques Thénard, Joseph Louis Gay-Lussac

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