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Chapter 2: Problem 43

For each of the following elements, write its chemical symbol, determine the name of the group to which it belongs (Table \(2.3 ),\) and indicate whether it is a metal, metalloid, or nonmetal: (a) potassium, (b) iodine, (c) magnesium, (d) argon, (e) sulfur.

Short Answer

Expert verified
(a) Potassium: Chemical symbol - \(K\), Group - Alkali metals (Group 1), Type - Metal. (b) Iodine: Chemical symbol - \(I\), Group - Halogens (Group 17), Type - Nonmetal. (c) Magnesium: Chemical symbol - \(Mg\), Group - Alkaline earth metals (Group 2), Type - Metal. (d) Argon: Chemical symbol - \(Ar\), Group - Noble gases (Group 18), Type - Nonmetal. (e) Sulfur: Chemical symbol - \(S\), Group - Chalcogens (Group 16), Type - Nonmetal.

Step by step solution

01

(a) Potassium

Potassium is an alkali metal, located in group 1 of the periodic table. Its chemical symbol is \(K\). Alkali metals are metals. So, potassium is a metal.
02

(b) Iodine

Iodine is a halogen, present in group 17 of the periodic table. Its chemical symbol is \(I\). Halogens are nonmetals. Therefore, iodine is a nonmetal.
03

(c) Magnesium

Magnesium is an alkaline earth metal, which can be found in group 2 of the periodic table. Its chemical symbol is \(Mg\). Alkaline earth metals are metals. Thus, magnesium is a metal.
04

(d) Argon

Argon is a noble gas, a part of group 18 in the periodic table. Its chemical symbol is \(Ar\). Noble gases are nonmetals, so argon is a nonmetal.
05

(e) Sulfur

Sulfur belongs to the group 16, known as chalcogens, in the periodic table. Its chemical symbol is \(S\). Chalcogens include nonmetals and metalloids. Sulfur, specifically, is a nonmetal.

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Most popular questions from this chapter

Give the names and charges of the cation and anion in each of the following compounds: (a) CuS, (b) \(\mathrm{Ag}_{2} \mathrm{SO}_{4}\) (c) \(\mathrm{Al}\left(\mathrm{ClO}_{3}\right)_{3},(\mathbf{d}) \mathrm{Co}(\mathrm{OH})_{2},(\mathbf{e}) \mathrm{PbCO}_{3}\)

How many protons, neutrons, and electrons are in the following atoms? (a) \(^{40} \mathrm{Ar},(\mathbf{b})^{65} \mathrm{Zn},(\mathbf{c})^{70} \mathrm{Ga},(\mathbf{d})^{80} \mathrm{Br},(\mathbf{e})^{184} \mathrm{W}\) \((\mathbf{f})^{243} \mathrm{Am} .\)

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