(a)
Interpretation:
The general properties of alkali metals has to be explained.
Concept introduction:
Element means a fundamental substance that can’t be chemically changed or broken into anything simpler.
The periodic table: Each element is identified through a one- or two-letter symbol and it is characterized by an
The six on the right is known as main group’s elements. The ten in the middle is known as
(b)
Interpretation:
The general properties of noble gases has to be explained
Concept introduction:
Element means a fundamental substance that can’t be chemically changed or broken into anything simpler.
The periodic table: Each element is identified through a one- or two-letter symbol and it is characterized by an atomic number. Let us consider the periodic table begins with hydrogen. 118 elements are presently known. About 90 elements occur naturally. The 14 elements beginning with Lanthanum
The six on the right is known as main group’s elements. The ten in the middle is known as transition metals and finally the 14 elements beginning with Lanthanum
(c)
Interpretation:
The general properties of Halogens has to be explained.
Concept introduction:
Element means a fundamental substance that can’t be chemically changed or broken into anything simpler.
The periodic table: Each element is identified through a one- or two-letter symbol and it is characterized by an atomic number. Let us consider the periodic table begins with hydrogen. 118 elements are presently known. About 90 elements occur naturally. The 14 elements beginning with Lanthanum
The six on the right is known as main group’s elements. The ten in the middle is known as transition metals and finally the 14 elements beginning with Lanthanum
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General Chemistry: Atoms First
- A biochemist who is studying the properties of certain sulfur(S)–containing compounds in the body wonders whethertrace amounts of another nonmetallic element might havesimilar behavior. To which element should she turn herattention? (a) F (b) As (c) Se (d) Cr (e) Parrow_forwardArrange in order of increasing nonmetallic character (a) the Period 3 elements P, Cl, and Na(b) the Group 7A elements F, Br, and Clarrow_forwardv. Answer true or false. (a) Mendeleev discovered that, when elements are arranged in order of increasing atomic weight, certain sets of properties recur periodically. (b) Main-group elements are those in the columns 3A to 8A of the Periodic Table. (e) Nonmetals are found at the top of the Periodic Table, metalloids in the middle, and metals at the bottom. (d) Among the 116 known elements, there are approximately equal numbers of metals and nonmetals. (e) A horizontal row in the Periodic Table is called a group. () The Group 1A elements are called the "alkali metals." (g) The alkali metals react with water to give hydrogen gas and a metal hydroxide, MOH, where “M" is the metal. (h) The halogens are Group 7A elements. (1) The boiling points of noble gases (Group 8A elements) increase in going from top to bottom of the column.arrow_forward
- Indicate the physical state for each of the following elements at 25 °C and normal pressure. Classify each element as a metal,nonmetal, or semimetal: (a) aluminum (b) hydrogen (c) helium (d) radiumarrow_forwardName each of the following oxides. Assuming that thecompounds are ionic, what charge is associated with themetallic element in each case? (a) NiO, (b) MnO2, (c) Cr2O3,(d) MoO3.arrow_forward1. Using the various group classifications from the periodic table, assign all appropriate labels to each of the following elements. Each element will have multiple (2 or more) answers. (a) Silver (b) Tennessine (c) Samarium (d) Antimony 2. Calculate the numbers of each type of nucleon and the number of electrons in each of the following species. (a) neodymium-149 (b) tantalum-179 (c) sellenium-79 dianion (d) krypton-85 trication 3. Write the ground-state electron configuration for the following atoms or ions. Use core notation in your electron configurations at your own discretion. (a) As (b) Au (c) Ce (d) Zn2− (e) Po4+ 4. Write an appropriate set of four quantum numbers (n, l, ms & ms) that could be representative of a valence electron in each of the following atoms or ions. (a) Bi (b) Sr (c) Mo (d) Ru2+ (e) Eu 5. In theory, there are an infinite number of energy levels and atomic orbital types that we can define using the solutions to the Schrödinger…arrow_forward
- Briefly explain each of the following: (a) Candela (b) Absolute zero (c) P4 (d) Chalcogens (e) An ionic compound (f) A chemical bond (g) An aqueous solution (h) A gas (i) Sublimation (j) Isotopesarrow_forward11. Write the symbol for each of the following ions: (a) the ion with a 1+ charge, atomic number 55, and mass number 133 (b) the ion with 54 electrons, 53 protons, and 74 neutrons (c) the ion with atomic number 15, mass number 31, and a 3- charge (d) the ion with 24 electrons, 30 neutrons, and a 3+ chargearrow_forwardArrange in order of increasing nonmetallic character. (a) the period 4 elements Ga, Ge, Ti (b) the Group 5A elements P, Bi, and Narrow_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_forwardIndicate the physical state for each of the following elements at 25 °C and normal pressure. Classify each element as a metal, nonmetal, or semimetal: (a) barium (b) boron (c)bismuth (d) brominearrow_forward5. Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal: (A) cobalt (B) europium (C) iodine (D) indiumarrow_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