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Ch.8 - Basic Concepts of Chemical Bonding
Brown - Chemistry: The Central Science 15th Edition
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Tutti i libri di testoBrown 15th EditionCh.8 - Basic Concepts of Chemical BondingProblema 41
Capitolo 8, Problema 41

Using only the periodic table as your guide, select the most electronegative atom in each of the following sets: (a) Se, Te, Br, I; (b) Be, Mg, C, Si (c) Al, Si, P, S (d) Zn, Ge, Ga, As.

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1
Identify the location of each element (Zn, Ge, Ga, As) on the periodic table to understand their properties better.
Recall that electronegativity generally increases as you move from left to right across a period and decreases as you move down a group.
Compare the positions of Zn, Ge, Ga, and As in the periodic table. Note that they are all in the same period (Period 4).
Since they are in the same period, focus on their positions from left to right to determine which has the highest electronegativity.
Identify the element that is furthest to the right in Period 4 among the given elements, as this element will have the highest electronegativity.

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Electronegativity

Electronegativity is a measure of an atom's ability to attract and hold onto electrons in a chemical bond. It is a key factor in determining how atoms interact with each other, influencing bond polarity and molecular structure. The Pauling scale is commonly used to quantify electronegativity, with higher values indicating a stronger tendency to attract electrons.
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02:10
Electronegativity Trends

Periodic Trends

Periodic trends refer to the predictable patterns observed in the properties of elements as you move across or down the periodic table. Electronegativity generally increases from left to right across a period and decreases from top to bottom within a group. Understanding these trends helps in predicting the behavior of elements in chemical reactions.
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Periodic Trends

Element Classification

Elements can be classified into categories such as metals, nonmetals, and metalloids based on their properties. In the given set, Zn (zinc) is a metal, Ge (germanium) and Ga (gallium) are metalloids, and As (arsenic) is a nonmetal. This classification is important as it influences the electronegativity values and the reactivity of the elements.
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01:39
Element Classification Example
Pratica correlata
Domanda del libro di testo

Which of the following bonds are polar: a. B—F, b. Cl—Cl, c. Se—O, d. H—I? Which is the more electronegative atom in each polar bond?

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Domanda del libro di testo

Place the following pairs of elements in order from smallest to largest difference in electronegativity: K and F, S and O, Br and I, Ca and Se, Li and Cl.

Domanda del libro di testo

Arrange the bonds in each of the following sets in order of increasing polarity: (a) C—F, O—F, Be—F (b) O—Cl,S—Br, C—P

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Domanda del libro di testo

By referring only to the periodic table, select (d) the element in the group K, C, Zn, F that is most likely to form an ionic compound with Ba.

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Domanda del libro di testo

Which of the following statements about electronegativity is or are true? i. The alkali metals are the family with the largest electronegativity values. ii. The numerical values for electronegativity have no units. iii. Electronegativity is the ability of an atom in a molecule to attract electron density toward itself.

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Domanda del libro di testo

(c) Do you expect the O—O bond in H2O2 to be longer or shorter than the O—O bond in O2? Explain.

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