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Chapter 8: Problem 47

Give the physical states (gas, liquid, or solid) of the representative elements in the fourth period at 1 atm and \(25^{\circ} \mathrm{C}: \mathrm{K}, \mathrm{Ca}, \mathrm{Ga}, \mathrm{Ge}, \mathrm{As}, \mathrm{Se}, \mathrm{Br}\).

Short Answer

Expert verified
The physical states of the elements at 25 °C and 1 atm are: Potassium (K) - Solid, Calcium (Ca) - Solid, Gallium (Ga) - Solid, Germanium (Ge) - Solid, Arsenic (As) - Solid, Selenium (Se) - Solid, Bromine (Br) - Liquid.

Step by step solution

01

Physical State of Potassium(K) and Calcium(Ca)

At room temperature, Potassium (K) and Calcium (Ca) are both metals, so their physical state is solid.
02

Physical State of Gallium(Ga) and Germanium(Ge)

Gallium (Ga) is a metal that melts just above room temperature, but for this exercise, we will consider it a solid at 25 °C. Germanium (Ge) is a metalloid, it possesses properties of both metals and non-metals, and it is solid at room temperature.
03

Physical State of Arsenic(As) and Selenium(Se)

Arsenic (As) is a metalloid and is solid at room temperature. Selenium (Se) is a nonmetal and it is also solid at room temperature.
04

Physical State of Bromine(Br)

Bromine (Br) is a nonmetal but it is one of the only two elements that are liquid at room temperature. Therefore, Bromine is in the liquid state at 25 °C and 1 atm.

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Most popular questions from this chapter

What do we mean when we say that two ions or an atom and an ion are isoelectronic?

How does atomic radius change as we move (a) from left to right across the period and (b) from top to bottom in a group?

What is the most important relationship among elements in the same group in the periodic table?

Write the empirical (or molecular) formulas of compounds that the elements in the third period (sodium to chlorine) are expected to form with (a) molecular oxygen and (b) molecular chlorine. In each case indicate whether you expect the compound to be ionic or molecular.

Give three examples of first-row transition metal (Sc to \(\mathrm{Cu}\) ) ions whose electron configurations are represented by the argon core.
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