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Descriptive ChemistryMCQ

The permanganate ion, MnO4–, is purple while the pertechnetate ion, TcO4–, is colorless. This differDescriptive Chemistry Chemistry Question

Question

The permanganate ion, MnO4–, is purple while the pertechnetate ion, TcO4–, is colorless. This difference is most closely related to which difference between manganese and technetium?

A.

Manganese(VII) is a stronger oxidant than technetium(VII).

✓ Correct
B.

Manganese consists of a stable isotope while all isotopes of technetium are radioactive.

C.

The Mn–O bond in permanganate is shorter than the Tc–O bond in pertechnetate.

D.

Elemental manganese is less dense than elemental technetium.

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