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Tema [17]
3 years ago
13

Atoms of two different elements must have different____

Chemistry
2 answers:
igor_vitrenko [27]3 years ago
8 0

Answer:

Atomic numbers

Explanation:

Atoms of two different elements must have different <u>atomic</u><u> </u><u>numbers</u><u>.</u><u> </u>

Lelu [443]3 years ago
7 0
Atomic number
Atoms of different elements must have different atomic number. The atomic number of each element is different than other Elements.
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Draw an electrolytic cell in which Mn2+ is reduced to Mn and Sn is oxidized to Sn2+. (Assume standard conditions).
babunello [35]

Answer:

-1.05 V

Explanation:

A detailed diagram of the setup as required in the question is shown in the image attached to this answer. The electrolytes chosen are SnCl2 for the anode half cell and MnCl2 for the cathode half cell. Tin rod and manganese rod are used as the anode and cathode materials respectively. Electrons flow from anode to cathode as indicated. The battery connected to the set up drives this non spontaneous electrolytic process.

Oxidation half equation;

Sn(s) ------> Sn^2+(aq) + 2e

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Mn^2+(aq) + 2e ----> Mn(s)

Cell voltage= E°cathode - E°anode

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E°anode= -0.14 V

Cell voltage= -1.19 V - (-0.14V)

Cell voltage= -1.05 V

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