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Chapter 2: Problem 84

Write the formula for each of the following compounds: a. chromium(VI) oxide b. disulfur dichloride c. nickel(II) fluoride d. potassium hydrogen phosphate e. aluminum nitride \(\mathbf{f}\). ammonia g. manganese(IV) sulfide h. sodium dichromate i. ammonium sulfite i. carbon tetraiodide

Short Answer

Expert verified
a. \(CrO_3\) b. \(S_2Cl_2\) c. \(NiF_2\) d. \(K_2HPO_4\) e. \(AlN\) f. \(NH_3\) g. \(MnS_2\) h. \(Na_2Cr_2O_7\) i. \((NH_4)_2SO_3\) j. \(CI_4\)

Step by step solution

01

a. Chromium(VI) oxide

For chromium(VI) oxide, chromium has an oxidation state of +6, and oxygen has a -2 charge. The chemical formula is determined by balancing the charges. The overall charge for the compound must be zero, so three oxygen atoms, each with a -2 charge, are needed to balance one chromium atom with a +6 charge. The chemical formula is CrO₃.
02

b. Disulfur dichloride

In disulfur dichloride, there are two sulfur atoms, each with a -2 charge, and two chlorine atoms, each with a +1 charge. The chemical formula is S₂Cl₂, based on the number of atoms of each element.
03

c. Nickel(II) fluoride

Nickel(II) fluoride has nickel, with an oxidation state of +2, and fluoride, with a -1 charge. To balance the charges, two fluoride atoms are needed for each nickel atom. The chemical formula is NiF₂.
04

d. Potassium hydrogen phosphate

For potassium hydrogen phosphate, there are potassium ions, which have a +1 charge, hydrogen ions (H⁺), and phosphate ions, which have a -3 charge. One hydrogen ion bonds with one phosphate ion, and two potassium ions are needed to balance the charges. The chemical formula is K₂HPO₄.
05

e. Aluminum nitride

Aluminum nitride consists of aluminum ions with a +3 charge and nitride ions with a -3 charge. The ions have equal and opposite charges, so they combine in a 1:1 ratio. The chemical formula is AlN.
06

f. Ammonia

Ammonia is a molecule with one nitrogen atom bonded to three hydrogen atoms. The chemical formula is NH₃.
07

g. Manganese(IV) sulfide

Manganese(IV) sulfide consists of manganese ions with a +4 oxidation state and sulfide ions with a -2 charge. Two sulfide ions are needed to balance the charge of one manganese ion. The chemical formula is MnS₂.
08

h. Sodium dichromate

Sodium dichromate contains sodium ions, which have a +1 charge, and dichromate ions, which have a -2 charge. Two sodium ions are needed to balance the charge of one dichromate ion. The chemical formula is Na₂Cr₂O₇.
09

i. Ammonium sulfite

Ammonium sulfite contains ammonium ions, which have a +1 charge, and sulfite ions, which have a -2 charge. Two ammonium ions are needed to balance the charge of one sulfite ion. The chemical formula is (NH₄)₂SO₃.
10

j. Carbon tetraiodide

Carbon tetraiodide is a molecule with one carbon atom bonded to four iodine atoms. The chemical formula is CI₄.

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Most popular questions from this chapter

Write the formula for each of the following compounds: a. ammonium hydrogen phosphate b. mercury(1) sulfide c. silicon dioxide d. sodium sulfite e. aluminum hydrogen sulfate f. nitrogen trichloride g. hydrobromic acid h. bromous acid i. perbromic acid j. potassium hydrogen sulfide k. calcium iodide I, cesium perchlorate

Two elements, \(\mathrm{R}\) and \(\mathrm{Q}\), combine to form two binary compounds. In the first compound, \(14.0 \mathrm{~g}\) of \(\mathrm{R}\) combines with \(3.00 \mathrm{~g}\) of \(\mathrm{Q}\). In the second compound, \(7.00 \mathrm{~g}\) of \(\mathrm{R}\) combines with \(4.50 \mathrm{~g}\) of \(\mathrm{Q}\). Show that these data are in accord with the law of multiple proportions. If the formula of the second compound is \(\mathrm{RQ}\), what is the formula of the first compound?

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.

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What are the symbols of the following metals: sodium, radium, iron, gold, manganese, lead?
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