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Chapter 2: Problem 44

The elements of group \(4 \mathrm{~A}\) show an interesting change in properties moving down the group. Give the name and chemical symbol of each element in the group and label it as a nonmetal, metalloid, or metal.

Short Answer

Expert verified
The elements in group 4A are: - Carbon (C) - Nonmetal - Silicon (Si) - Metalloid - Germanium (Ge) - Metalloid - Tin (Sn) - Metal - Lead (Pb) - Metal

Step by step solution

01

Identify elements in group 4A

Group 4A elements have 4 valence electrons. They include carbon (C), silicon (Si), germanium (Ge), tin (Sn), and lead (Pb).
02

Classify each element

Carbon (C): Carbon is a nonmetal due to its ability to form multiple strong covalent bonds with other nonmetal elements like oxygen and hydrogen. Silicon (Si): Silicon is a metalloid as it exhibits properties of both metals and nonmetals. It is a good conductor of electricity and can form covalent bonds with nonmetals. Germanium (Ge): Germanium is also a metalloid due to its intermediate metallic and nonmetallic properties, as well as its electrical conductivity. Tin (Sn): Tin is a metal. It exhibits metallic properties like luster, malleability, and conductivity. Lead (Pb): Lead is a metal as it has the characteristic metallic properties like high density, malleability, ductility, and electrical conductivity.
03

Provide the final list of elements with their classification

- Carbon (C) - Nonmetal - Silicon (Si) - Metalloid - Germanium (Ge) - Metalloid - Tin (Sn) - Metal - Lead (Pb) - Metal

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Most popular questions from this chapter

An atom of rhodium ( \(R \mathrm{~h})\) has a diameter of about \(2.7 \times 10^{-8} \mathrm{~cm}\). (a) What is the radius of a rhodium atom in angstroms \((\AA)\) and in meters (m)? (b) How many Rh atoms would have to be placed side by side to span a distance of \(6.0 \mu \mathrm{m}\) ? (c) If you assume that the \(\mathrm{Rh}\) atom is a sphere, what is the volume in \(\mathrm{m}^{3}\) of a single atom?

(a) Define atomic number and mass number. (b) Which of these can vary without changing the identity of the element?

Hydrogen sulfide is composed of two elements: hydrogen and sulfur. In an experiment, \(6.500 \mathrm{~g}\) of hydrogen sulfide is fully decomposed into its elements. (a) If \(0.384 \mathrm{~g}\) of hydrogen is obtained in this experiment, how many grams of sulfur must be obtained? (b) What fundamental law does this experiment demonstrate? (c) How is this law explained by Dalton's atomic theory?

(a) Assuming the dimensions of the nucleus and atom shown in Figure 2.11, what fraction of the volume of the atom is taken up by the nucleus? (b) Using the mass of the proton from Table \(2.1\) and assuming its diameter is \(1.0 \times 10^{-15} \mathrm{~m}\), calculate the density of a proton in \(\mathrm{g} / \mathrm{cm}^{3}\).

Fill in the gaps in the following table, assuming each column represents a neutral atom. $$ \begin{array}{l|c|c|c|c|c} \hline \text { Symbol } & { }^{159} \mathrm{~Tb} & & & & \\ \text { Protons } & & 29 & & & 37 \\ \text { Neutrons } & & 34 & 53 & & \\ \text { Electrons } & & & 42 & 34 & \\ \text { Mass no. } & & & & 79 & 85 \\ \hline \end{array} $$
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