The nature of oxides V2O3 and CrO is indexed as /X/ and /Y/ type respectively. The correct set of X and Y is:
d & f-Block Elements · Class 12 · JEE Main Previous Year Question
The nature of oxides and CrO is indexed as and type respectively. The correct set of X and Y is:
- a
X = acidic, Y = acidic
- b
X = basic, Y = amphoteric
- c✓
X = basic, Y = basic
- d
X = amphoteric, Y = basic
X = basic, Y = basic
Nature of transition metal oxides depends on oxidation state:
- Low O.S. → Basic
- Intermediate O.S. → Amphoteric
- High O.S. → Acidic
: V = +3 (low) → Basic
CrO: Cr = +2 (low) → Basic
Comparison of Cr oxides:
| Oxide | Cr O.S. | Nature | |-------|---------|--------| | CrO | +2 | Basic | | | +3 | Amphoteric | | | +6 | Acidic |
Both and CrO are in low oxidation states → both basic.
Answer: Option (3) — X = basic, Y = basic
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