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Chapter 17, Problem 17.1VP

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Chemistry

4th Edition
Thomas R. Gilbert
ISBN: 9780393919370

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Chapter
Section
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Chemistry

4th Edition
Thomas R. Gilbert
ISBN: 9780393919370
Interpretation Introduction

Interpretation: The element that forms colored compounds with chloride ion in the given elements is to be stated.

Concept introduction: Cations form colored compounds when there is a presence of valence electrons in them which undergo transitions from ground state energy level to excited state energy level.

To determine: The element that forms colored compounds with chloride ion in the given elements.

Answer

Solution

The element that forms colored compounds with chloride ion is chromium.

Explanation

Explanation

The given Figure is,

images

Figure 1

In the Figure 1, the elements shown are calcium, chromium, cobalt and zinc. The transition metals form colored compounds because of the presence of more number of valence electrons. In the given elements, calcium forms Ca2+ ions which form compound with chloride ion and give CaCl2 which is a colorless solid.

Chromium forms Cr2+ and Cr3+ ions which form compounds with Cl ion and they are colored compounds. Zinc element form Zn2+ ions which form ZnCl2 compound which is a colorless solid and cobalt also form colorless CoCl2 .

Hence, chromium forms colored compound with chloride ions.

Conclusion

The element that forms colored compounds with chloride ion is chromium.

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