D-And F-Block Elements Ques 471
Question: The colour of $ CuCr_2O_7 $ solution in water is green because
Options:
A) $ Cr_2O_7^{2-} $ ions are green.
B) $ C{{u}^{2+}} $ ions are green.
C) Both $ Cr_2O_7^{2-} $ and $ C{{u}^{2+}} $ ions are green.
D) $ C{{u}^{2+}} $ ions are blue and $ Cr_2O_7^{2-} $ ions are yellow.
Show Answer
Answer:
Correct Answer: D
Solution:
Green colour of $ CuCr_2O_7 $ is due to blue colour of $ C{{u}^{2+}} $ ions and yellow colour of $ Cr_2O_7^{2-} $ ions.
