Concept explainers
(a)
Interpretation:
Silicon is a representative element, transition element or an inner transition element has to be identified from its position in periodic table.
Concept Introduction:
Elements are arranged in Periodic table according to their
Periods are numbered from 1 to 7 and it is from top to bottom in Periodic table. Groups are numbered from left to right. The Group numbers are given as 1A, 2A, 3B to 8B, 1B, 2B, 3A to 8A.
The elements that are present in Group with A are known as representative elements while Group with B is known as
(b)
Interpretation:
Element
Concept Introduction:
Refer part (a).
(c)
Interpretation:
Magnesium is a representative element, transition element or an inner transition element has to be identified from its position in periodic table.
Concept Introduction:
Refer part (a).
(d)
Interpretation:
Element
Concept Introduction:
Refer part (a).
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Chapter 2 Solutions
Chemistry: Principles and Practice
- Most abundant metal on the surface of the earth:(a) Iron(b) Aluminium(c) Calcium(d) Sodiumarrow_forwardwrite a balanced chemical equation for each (A) Iron (III) chloride reacts with sodium hydroxide to produce iron (III) hydroxide and sodium chloride. (B) Magnesium nitrite reacts with perchloric acid to produce magnesium perchlorate and nitrous acid. (C) Copper(II) hydroxide reacts with hydrosulfuric acid to produce copper (II) sulfide and water.arrow_forwardMany important fertilizers are ionic compounds thatcontain the elements nitrogen, phosphorus, and potassium because these are frequently the limiting plantgrowth nutrients in soil.(a) Write the chemical formulas for the following chemical fertilizers: ammonium phosphate, potassiumnitrate, ammonium sulfate.(b) Calculate the mass percentage of nitrogen, phosphorus, and potassium for each of the compounds inpart (a).arrow_forward
- Chlorine reacts with oxygen to form Cl2O7. (a) What is the name of this product (see Table 2.6)? (b) Write a balanced equation for the formation of Cl2O7(l) from the elements. (c) Under usual conditions, Cl2O7 is a colorless liquid with a boiling point of 81℃. Is this boiling point expected or surprising? (d) Would you expect Cl2O7 to be more reactive toward H+(aq) or OH− (aq)? Explain. (e) If the oxygen in Cl2O7 is considered to have the -2 oxidation state, what is the oxidation state of the Cl? What is the electron configuration of Cl in this oxidation state?arrow_forwardWhen 25 g of lead (II) nitrate, Pb(NO3)2, is mixed with 15 g of sodium iodide in water, a reaction occurs and this produces sodium nitrate and solid lead (II) iodide. (a) Write a balanced equation for the reaction. (b) Calculate the theoretical amount of lead (II) iodide produced.arrow_forwardA gaseous binary compound has a vapor density that is 1.94 times that of oxygen at the same temperature and pressure. When 1.39 g of the gas is burned in an excess of oxygen, 1.21 g water is formed, removing all the hydrogen originally present.(a) Estimate the molecular mass of the gaseous compound.(b) How many hydrogen atoms are there in a molecule ofthe compound?(c) What is the maximum possible value of the atomicmass of the second element in the compound?(d) Are other values possible for the atomic mass of thesecond element? Use a table of atomic masses to identify the element that best fits the data.(e) What is the molecular formula of the compound?arrow_forward
- QUESTION 1)Describe the PHYSICAL PROPERTIES of the followingsubstances? 2)Specifically, what type ofmatter is this? (e.g. halogen) (a) Potassium dichromate(b) Glucose (C6H12O6)(c) Magnesium(d) Bromine, Br2(e) NiSO4·6H2O(f) Sulfur(g) Iodine, I2(h) PbI2(i) Copper(j) Stainless steel(k) Ethanol, C2H5OH(l) Zinc(m) Hydrochloric acid(n) Aluminum(o) Icearrow_forwardIs the decomposition of CuSO4· 5 H2O a physical or a chemical change? Why?arrow_forwardA sample containing Al2O3 and Na2Cr2O7.2H2O was brought into the laboratory for analysis. The analyst heated a 2.2846 gram sample of this material to 100oC for one hour, at which time only Al2O3 and Na2Cr2O7 remained. This mixture was found to weigh 2.2312 grams. Calculate the percent chromium in the sample.arrow_forward
- D1. One atom has 20 protons and a mass number of 44. Another atom has 20 protons and a mass number of 40. (a) What is the similarity and dissimilarity in these atoms? (b) The atom combines with phosphate ion. Write the chemical formula and chemical name of the compound. (c) What is the valency and oxidation number of an atom in the elemental form?arrow_forwardWhat is the mass percent of aluminum in Al(NO3)3 • 9H2O?arrow_forwardWrite a formula for the compound that forms from calciumand(a) hydroxide (b) carbonate(c) phosphate (d) hydrogen phosphatearrow_forward
- General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning