15.2.2 Quiz: Galvanic Cells Question 7 of 10
What are the half-reactions for a galvanic cell with Zn and Ni electrodes?
A. Zn(s) → Zn2+(aq) + 2e" and Ni2+(aq) + 2e → Ni(s)
B. Zn2+(aq) + 2e → Zn(s) and Ni2+(aq) + 2e → Ni(s)
C. Zn2+(aq) + 2e → Zn(s) and Ni(s) → Ni2+(aq) + 2e
D. Zn(s) → Zn2+(aq) + 2e and Ni(s) → Ni2+(aq) + 2e
SUBMIT

n has four pairs of electrons in the valence shell, electrons repel one another ,n has 7 protons in its nucleus, and since n has 7 protons, it must fill the second shell, giving it 4 pairs of electrons. the electrons form 3 bonds and 1 lone pair of electrons. each pair of electrons repels the other pairs, so they are equally far apart.

so all of the above

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