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Chapter 2: Problem 42

Locate each of the following elements in the periodic table; give its name and atomic number, and indicate whether it is a metal, metalloid, or nonmetal: (a) \(\mathrm{Li},(\mathbf{b}) \mathrm{Sc},(\mathbf{c}) \mathrm{Ge},(\mathbf{d}) \mathrm{Yb}\) \((\mathbf{e}) \mathrm{Mn},(\mathbf{f}) \mathrm{Sb},(\mathbf{g}) \mathrm{Xe}\)

Short Answer

Expert verified
(a) Lithium (Li) has an atomic number of 3 and is a metal. (b) Scandium (Sc) has an atomic number of 21 and is a metal. (c) Germanium (Ge) has an atomic number of 32 and is a metalloid. (d) Ytterbium (Yb) has an atomic number of 70 and is a metal. (e) Manganese (Mn) has an atomic number of 25 and is a metal. (f) Antimony (Sb) has an atomic number of 51 and is a metalloid. (g) Xenon (Xe) has an atomic number of 54 and is a nonmetal.

Step by step solution

01

(a) Li

Lithium is represented by the symbol Li. Its atomic number is 3, which means it has three protons in its nucleus. Lithium belongs to the alkali metals family in Group 1, so it is a metal.
02

(b) Sc

Scandium is represented by the symbol Sc. Its atomic number is 21, meaning it has 21 protons in its nucleus. Scandium belongs to the transition metals, located in group 3, hence it is a metal.
03

(c) Ge

Germanium is represented by the symbol Ge. Germanium's atomic number is 32, which means it has 32 protons in its nucleus. Germanium is a metalloid as it shares properties of both metals and non-metals. It is located in group 14.
04

(d) Yb

Ytterbium is represented by the symbol Yb. Its atomic number is 70, meaning it has 70 protons in its nucleus. Ytterbium is a rare earth metal in the Lanthanide series and is a metal.
05

(e) Mn

Manganese is represented by the symbol Mn. The atomic number of Manganese is 25, meaning it has 25 protons in its nucleus. Manganese belongs to the transition metals, located in group 7, hence it is a metal.
06

(f) Sb

Antimony is represented by the symbol Sb. Its atomic number is 51, indicating it has 51 protons in its nucleus. Antimony is a metalloid, as it has properties of both metals and non-metals. Antimony is located in group 15.
07

(g) Xe

Xenon is represented by the symbol Xe. Its atomic number is 54, meaning it has 54 protons in its nucleus. Xenon is a nonmetal belonging to the noble gases group (group 18) as it has a full outer electron shell.

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