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Chapter 22: Problem 27

Identify the following hydrides as ionic, metallic, or molecular: (a) \(\mathrm{BaH}_{2},\) (b) \(\mathrm{H}_{2} \mathrm{Te},\) (c) \(\mathrm{TiH}_{1.7}\).

Short Answer

Expert verified
The hydrides can be classified as follows: (a) \(\mathrm{BaH}_{2}\) is an ionic hydride, (b) \(\mathrm{H}_{2}\mathrm{Te}\) is a molecular (covalent) hydride, and (c) \(\mathrm{TiH}_{1.7}\) is a metallic hydride.

Step by step solution

01

Identify the Element in Each Hydride

For this exercise, we'll be focusing on the different elements present in each given hydride: (a) \(\mathrm{BaH}_{2}\) - Barium (Ba) from Group 2 (b) \(\mathrm{H}_{2}\mathrm{Te}\) - Tellurium (Te) from Group 16 (c) \(\mathrm{TiH}_{1.7}\) - Titanium (Ti) from the transition metal group
02

Determine Hydride Type#a) - Barium Hydride

Barium is an alkaline earth metal in group 2, which typically forms ionic hydrides. As a result, Barium hydride \(\mathrm{BaH}_{2}\) can be classified as an ionic hydride.
03

Determine Hydride Type#b) - Hydrogen Telluride

Tellurium is a non-metal in group 16, so it forms molecular (covalent) hydrides with hydrogen. Thus, Hydrogen Telluride \(\mathrm{H}_{2}\mathrm{Te}\) can be classified as a molecular hydride.
04

Determine Hydride Type#c) - Titanium Hydride

Titanium is a transition metal, which generally forms metallic hydrides. Therefore, Titanium hydride \(\mathrm{TiH}_{1.7}\) can be classified as a metallic hydride.
05

In Summary

Using the categories outlined above, the types of hydrides are as follows: (a) \(\mathrm{BaH}_{2}\) - Ionic Hydride (b) \(\mathrm{H}_{2}\mathrm{Te}\) - Molecular (covalent) Hydride (c) \(\mathrm{TiH}_{1.7}\) - Metallic Hydride

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Most popular questions from this chapter

The atomic and ionic radii of the first three group \(6 \mathrm{~A}\) elements are (a) Explain why the atomic radius increases in moving downward in the group. (b) Explain why the ionic radii are larger than the atomic radii. (c) Which of the three anions would you expect to be the strongest base in water? Explain. [Sections 22.5 and 22.6\(]\)

In your own words, define the following terms: (a) allotrope, (b) disproportionation, (c) interhalogen, (d) acidic anhydride, (e) condensation reaction, (f) protium.

Write the Lewis structure for each of the following species, and indicate the structure of each: (a) \(\mathrm{SeO}_{3}{ }^{2-} ;\) (b) \(\mathrm{S}_{2} \mathrm{Cl}_{2} ;(\mathrm{c})\) chlorosulfonic acid, \(\mathrm{HSO}_{3} \mathrm{Cl}\) (chlorine is bonded to sulfur).

Write a balanced equation for each of the following reactions. (You may have to guess at one or more of the reaction products, but you should be able to make a reasonable guess, based on your study of this chapter.) (a) Hydrogen selenide can be prepared by reaction of an aqueous acid solution on aluminum selenide. (b) Sodium thiosulfate is used to remove excess \(\mathrm{Cl}_{2}\) from chlorine-bleached fabrics. The thiosulfate ion forms \(\mathrm{SO}_{4}^{2-}\) and elemental sulfur, while \(\mathrm{Cl}_{2}\) is reduced to \(\mathrm{Cl}^{-}\).

Write the chemical formula for each of the following compounds, and indicate the oxidation state of the group \(6 \mathrm{~A}\) element in each: (a) sulfur tetrachloride, (b) selenium trioxide, (c) sodium thiosulfate, (d) hydrogen sulfide, (e) sulfuric acid, \((\mathbf{f})\) sulfur dioxide, \((\mathrm{g})\) mercury telluride.
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