1.

The element with which of the following outer electron configuration may exhibit the largest number of oxidation states in its compounds:

A. \[3{{d}^{5}}4{{s}^{2}}\]
B. \[3{{d}^{8}}4{{s}^{2}}\]
C. \[3{{d}^{7}}4{{s}^{2}}\]
D. \[3{{d}^{6}}4{{s}^{2}}\]
Answer» B. \[3{{d}^{8}}4{{s}^{2}}\]


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