which pair of element do not exhibit variable O.S.
1) fe,pb 2) H,cl 3) f,zn 4) o,n
 

2) H and Cl do not exhibit variable Oxidation states.
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F,zn not a H,Cl because 'H' shows variable oxidation. But in 'F' it is a highly electro negativity it posses negative charge
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Nnnk
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Which pair of elements do not exhibit variable O. S?
  • -1
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