Chromium dissolves in dilute H2SO4 for [Cr(H2O)6]2. The colour of the ion is:
Correct answer: A. Blue
- A. Blue
- B. Yellow
- C. Brown
- D. Pink
Explanation
The valence shell electronic configuration of Cu+2 ions is 3d9 Hence, aqueous Cu+2 ions are blue in colour,It contains 1 unpaired electron.VIDEO EXPLANATION .
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About Transition Elements
Transition elements are identified by their partially filled d subshells in atoms or common ions. The topic covers the electronic structure of d-block elements, including the filling order of 4s and 3d orbitals, variable oxidation states and the distinction between transition elements and elements with completely filled d subshells.
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