BR GChem Section II Q.72

[gunj122]

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Question:
Which of the following transition metals has the GREATEST d-d transition energy, given that the color observed in the flame test is due to a d-d electronic transition?

A. Ni(2+)
B. Cr(3+)
C. Co(2+)
D. V(2+)

The answer BR gave was V(2+) because it produces violet light, and therefore the highest energy is associated with it.

Now I completely understand this logic, but for those of you with the book, where the hell does it say that in the passage? It clearly says the colors emitted for the other 3 elements, but nothing about Vanadium. How can we rule out Vanadium without this info? Obviously we are not expected to know what color Vanadium burns, so how are we supposed to reach this answer with what we're given?

 

[Catburr]

It's there in Table 2, within the passage. It's the first row of the table.

If we have the same BR Chem, that is. 🙂 There's apparently multiple editions of the physics books out there, not sure about the chem.