To identify:
From the four highlighted metals in Figure P32.1, the cations of which of the two form coloured compound with
Answer to Problem 23.1VP
Solution:
Cations of chromium (green) and cobalt (yellow) form coloured compound with
Explanation of Solution
The highlighted elements are calcium (red), chromium (green), cobalt (yellow), and zinc (blue).
Transition metal compounds are often colored because of partially filled d-orbitals. The d-orbitals are generally split into two groups of different energies. The difference in the energies of the two groups is designated
Calcium belongs to s-block element and does not have d-electrons. Hence, it does not form coloured compounds.
Cations of chromium and cobalt have d-electrons which undergo d-d transition, and therefore, appear colored.
Zinc is also a
Transition elements having partially filled d-subshell form coloured compounds.
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Chapter 23 Solutions
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