Concept explainers
3-29 Answer true or false.
(a) According to the Lewis model of bonding, atoms bond together in such a way that each atom participating in the bond acquires an outer-shell electron configuration matching that of the noble gas nearest to it in
(b) Atoms that lose electrons to achieve a filled valence shell become cations and form ionic bonds with anions.
(c) Atoms that gain electrons to achieve filled valence shells become anions and form ionic bonds with cations.
(d) Atoms that share electrons to achieve filled valence shells form covalent bonds.
(e) Ionic bonds tend to form between elements on the left side of the Periodic Table, and covalent bonds tend to form between elements on the right side of the Periodic Table.
(f) Ionic bonds tend to form between a metal and a nonmetal.
(g) When two nonmetals combine, the bond between them is usually covalent.
(h) Electronegativity is a measure of an atom’s at traction for the electrons it shares in a
(j) Electronegativity generally increases with atomic number.
(j) Electronegativity generally increases with atomic weight.
(k) Electronegativity is a periodic property.
(l) Fluorine, in the upper-right corner of the Periodic Table, is the most electronegative element; hydrogen, in the upper-left corner, is the least electronegative element.
(m)Electronegativity depends on both the nuclear charge and the distance of the valence electrons from the nucleus.
(n) Electronegativity generally increases from left to right across a period of the Periodic Table.
(o) Electronegativity generally increases from top to bottom in a column of the Periodic Table.
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Chapter 3 Solutions
Student Solutions Manual for Bettelheim/Brown/Campbell/Farrell/Torres' Introduction to General, Organic and Biochemistry, 11th
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- 3-78 Nitrous oxide, N20, laughing gas, is a colorless, nontoxic, tasteless, and odorless gas. It is used as an inhalation anesthetic in dental and other surgeries. Because nitrous oxide is soluble in vegetable oils (fats), it is used commercially as a propellant in whipped toppings Nitrous oxide dissolves in fats. The gas is added under pressure to cans of whipped topping. When the valve is opened, the gas expands, thus expanding (whipping) the topping and forcing it out of the can. (a) How many valence electrons are present in a molecule of N20? (b) Write two equivalent contributing structures for this molecule. The connectivity in nitrous oxide is NNO. (c) Explain why the following is not an acceptable contributing structure:arrow_forward3-67 Why does nitrogen have three bonds and one unshared pair of electrons in covalent compounds?arrow_forward3-110 Name and write the formula for the fluorine containing compound present in fluoridated tooth pastes and dental gels.arrow_forward
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