1.

Choose the correct optionI. Transition metals are characterised by variable oxidation stateII.  Elements of IB & IIB are transition elements III.  Elements of gp1 exhibit only +1 O.SIV.  Group 17 contains only gases (a)  TTFF(b)  TFTF (c)  TTTF (d)  TTTT

Answer»

Correct option  (c)  TTTF



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