The highest oxidation state shown by transition elements is
- A$+7$ by $Mn$
- B$+8$ by $Os$
- C$+8$ by $Ru$
- DBoth $(b)$ and $(c)$
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The atomic radius of elements of which of the following series would be nearly the same?
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Match the following metal ions with their respective colours:
Metal ion Colour $A. V^{4+}$ $I. Colourless$ $B. Ti^{3+}$ $II. Purple$ $C. Ti^{4+}$ $III. Green$ $D. Ni^{2+}$ $IV. Blue$ $V. Yellow$
| Metal ion | Colour |
|---|---|
| $A. V^{4+}$ | $I. Colourless$ |
| $B. Ti^{3+}$ | $II. Purple$ |
| $C. Ti^{4+}$ | $III. Green$ |
| $D. Ni^{2+}$ | $IV. Blue$ |
| $V. Yellow$ |
Transition elements are:
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