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Visualizing ConceptsConsider the Mg2+, CI-, K+, and Se2-
Chapter , Problem 3E(choose chapter or problem)
Consider the \(\mathrm{Mg}^{2+}, \mathrm{Cl}^{-}, \mathrm{K}^{+}, \text {and } \mathrm{Se}^{2-}\) ions. The four spheres below represent these four ions, scaled according to ionic size. (a) Without referring to Figure 7.8, match each ion to its appropriate sphere.
How do cations of the same charge change in radius as you move down a column in the periodic table?
▲ Figure 7.8 Cation and anion size. Radii, in angstroms, of atoms and their ions for five
groups of representative elements.
(b) In terms of size, between which of the spheres would you find the
(i) \(\mathrm{Ca}^{2+}\) and
(ii) \(\mathrm{S}^{2-}\) ions? [Section 7.3]
Equation Transcription:
Text Transcription:
Mg2+, Cl-, K+, and Se2-
Ca2+
S2-
Questions & Answers
QUESTION:
Consider the \(\mathrm{Mg}^{2+}, \mathrm{Cl}^{-}, \mathrm{K}^{+}, \text {and } \mathrm{Se}^{2-}\) ions. The four spheres below represent these four ions, scaled according to ionic size. (a) Without referring to Figure 7.8, match each ion to its appropriate sphere.
How do cations of the same charge change in radius as you move down a column in the periodic table?
▲ Figure 7.8 Cation and anion size. Radii, in angstroms, of atoms and their ions for five
groups of representative elements.
(b) In terms of size, between which of the spheres would you find the
(i) \(\mathrm{Ca}^{2+}\) and
(ii) \(\mathrm{S}^{2-}\) ions? [Section 7.3]
Equation Transcription:
Text Transcription:
Mg2+, Cl-, K+, and Se2-
Ca2+
S2-
ANSWER:
Step 1 of 5
The four spheres represent the four ions.
Assume, the first sphere is denoted by sphere A, the second sphere is denoted by sphere B, the third sphere is denoted by sphere C and the fourth sphere is denoted by sphere D.