MCQ
In which of the following group has $(-M)$ effect
- A

- B

- C

- ✓






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(Take $pH_2 = 1\,atm$ ), $T = 298\,K$.
(Given : Atomic Number: F :9, $Cl : 17, Na =11$, $Mg =12, Al =13, K =19, Ca =20, Sc =21$ )