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Chapter 2: Problem 108

Which of the following statements is(are) correct? a. The symbols for the elements magnesium, aluminum, and xenon are Mn, Al, and Xe, respectively. b. The elements \(\mathrm{P}, \mathrm{As}\), and \(\mathrm{Bi}\) are in the same family on the periodic table. c. All of the following elements are expected to gain electrons to form ions in ionic compounds: Ga, Se, and \(\mathrm{Br}\). d. The elements Co, \(\mathrm{Ni}\), and \(\mathrm{Hg}\) are all transition elements. e. The correct name for \(\mathrm{TiO}_{2}\) is titanium dioxide.

Short Answer

Expert verified
Statements 'b', 'd', and 'e' are correct.

Step by step solution

01

Check element symbols and names

Start by checking the symbols for magnesium, aluminum, and xenon. Magnesium: the correct symbol is Mg (not Mn as mentioned in the first statement) Aluminum: the correct symbol is Al Xenon: the correct symbol is Xe Since only two of the three symbols are correct in statement 'a', this statement is false.
02

Examine family on the periodic table

Check whether elements P, As, and Bi belong to the same family on the periodic table. These elements belong to Group 15 (known as the nitrogen group / pnictogens): - P (Phosphorus) - As (Arsenic) - Bi (Bismuth) Since all elements are in the same family on the periodic table, statement 'b' is true.
03

Electron gain or loss for ions

Determine whether Ga, Se, and Br gain or lose electrons when forming ions: - Ga (Gallium): tends to lose 3 electrons to form a +3 ion - Se (Selenium): tends to gain 2 electrons to form a -2 ion - Br (Bromine): tend to gain one electron to form -1 ion Since only two of the three elements are expected to gain electrons in ionic compounds, statement 'c' is false.
04

Transition elements

Check whether Co, Ni, and Hg are classified as transition elements: - Co (Cobalt): a transition metal element - Ni (Nickel): a transition metal element - Hg (Mercury): a transition metal element All three elements are transition elements, so statement 'd' is true.
05

Proper compound name

Determine the correct name for the compound TiO2. Using systematic naming conventions for compounds, TiO2 is named as following: Titanium (Ti) is the metal, and the non-metal oxygen represented by 'O'. Since there are two oxygen atoms, the suffix '-dioxide' is added. Thus, the correct name for \(\mathrm{TiO}_{2}\) is titanium dioxide. Statement 'e' is true. In conclusion, statements 'b', 'd', and 'e' are correct.

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Most popular questions from this chapter

Identify each of the following elements. Give the number of protons and neutrons in each nucleus. a. \({ }_{15}^{31} X\) b. \({ }_{53}^{127} \mathrm{X}\) c. \({ }_{19}^{39} \mathrm{X}\) d. \({ }_{70}^{173} \mathrm{X}\)

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