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(i) ( M / M^ 2+ | N^ 2+ / N: E_ cell ^ 0 =1.1 ~V ) (i) ( pt, H_ 2 / H^ + | N^ 2+ / N: E_ cell ^ 0 =-0.42 ~V ) ( E_ M / M^ 2+ ^ 0 = ) ? এর বিভবের মান কত? | Suva Ai