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Chapter 2: Problem 100

From the following list of elements-Ar, H, Ga, Al, Ca, Br, Ge, K, O-pick the one that best fits each description. Use each element only once: (a) an alkali metal, (b) an alkaline earth metal, (c)a noble gas, (d ) a halogen, ( e) a metalloid, ( f ) a nonmetal listed in group \(1 \mathrm{A},\) (g) a metal that forms a \(3+\) ion, (h) a nonmetal that forms a \(2-\) ion, (i) an element that resembles aluminum.

Short Answer

Expert verified
(a) K, (b) Ca, (c) Ar, (d) Br, (e) Ge, (f) H, (g) Ga, (h) O, (i) Al

Step by step solution

01

(Step 1: Identify the alkali metal)

Elemental K is an alkali metal as it belongs to group 1A of the periodic table.
02

(Step 2: Identify the alkaline earth metal)

Elemental Ca is an alkaline earth metal because it belongs to group 2A of the periodic table.
03

(Step 3: Identify the noble gas)

Elemental Ar is a noble gas since it belongs to group 8A of the periodic table.
04

(Step 4: Identify the halogen)

Elemental Br is a halogen because it belongs to group 7A of the periodic table.
05

(Step 5: Identify the metalloid)

Elemental Ge is a metalloid as it is located along the diagonal line between metals and nonmetals in the periodic table.
06

(Step 6: Identify the nonmetal in group 1A)

Elemental H is the nonmetal in group 1A of the periodic table.
07

(Step 7: Identify the metal that forms a 3+ ion)

Elemental Ga is a metal from group 3A that forms a 3+ ion.
08

(Step 8: Identify the nonmetal that forms a 2- ion)

Elemental O is a nonmetal from group 6A that forms a 2- ion.
09

(Step 9: Identify the element that resembles aluminum)

Elemental Al resembles aluminum because they are the same element.

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Most popular questions from this chapter

Name the following ionic compounds: (a) \(\mathrm{KCN},(\mathbf{b})\mathrm{NaBrO}_{2}\) \((\mathbf{c}) \operatorname{Sr}(\mathrm{OH})_{2}, \quad(\mathbf{d}) \quad\) CoTe (e) \(\mathrm{Fe}_{2}\left(\mathrm{CO}_{3}\right)_{3}, \quad(\mathbf{f}) \quad \mathrm{Cr}\left(\mathrm{NO}_{3}\right)_{3}$$(\mathrm{g})\left(\mathrm{NH}_{4}\right)_{2} \mathrm{SO}_{3},(\mathbf{h}) \mathrm{NaH}_{2} \mathrm{PO}_{4}$$(\mathbf{i}) \mathrm{KMnO}_{4},(\mathrm{i}) \mathrm{Ag}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\)

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Elements in the same group of the periodic table often form oxyanions with the same general formula. The anions are also named in a similar fashion. Based on these observations,suggest a chemical formula or name, as appropriate, for each of the following ions:\((\mathbf{a}) \mathrm{BrO}_{4}^{-},(\mathbf{b}) \mathrm{SeO}_{3}^{2-}\) \((\mathbf{c})\) arsenate ion, \((\mathbf{d})\) hydrogen tellurate ion.

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