Reduction potential of four elements P,Q,R,S is -2.90, +0.34, +1.20 and -0.76. Reactivity decreases in the order

Options :
  1. P>Q>R>S
  2. Q>P>R>S
  3. R>Q>S>P
  4. P>S>Q>R
Answer and Explanation :-

Answer: Option 4

Explanation:

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