1. Tardigrade
  2. Question
  3. Chemistry
  4. Ruby, the gemstone I. is aluminium oxide ( Al 2 O 3). II. contains 0.5-1 % Cr 3+ ions (d3). III. Cr 3+ ions are randomly distributed in positions normally occupied by Al 3+. The true statement(s) is/are

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. Ruby, the gemstone
I. is aluminium oxide $\left( Al _{2} O _{3}\right)$.
II. contains $0.5-1 \% Cr ^{3+}$ ions $\left(d^{3}\right)$.
III. $Cr ^{3+}$ ions are randomly distributed in positions normally occupied by $Al ^{3+}$.
The true statement(s) is/are

Coordination Compounds

Solution:

Correct answer is (a) $I$ and $II$