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Ch.7 - Periodic Properties of the Elements
Chapter 7, Problem 9

Group 1A and 2A elements are sometimes called, collectively, “the s-block.” Therefore, what is an analogous name for the entire collection of the group 3A, 4A, 5A, 6A, 7A, and 8A elements?

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1
Identify the electron configuration of the elements in groups 3A to 8A.
Recognize that these elements have their outermost electrons in the p orbital.
Understand that the p orbital can hold a maximum of 6 electrons, which corresponds to the 6 groups from 3A to 8A.
Note that these elements are collectively referred to as the 'p-block' elements.
Conclude that the analogous name for the entire collection of group 3A to 8A elements is the 'p-block.'

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Periodic Table Groups

The periodic table is organized into columns called groups, which contain elements with similar chemical properties. Groups 1A and 2A, known as the s-block, include alkali and alkaline earth metals. Understanding the arrangement of elements in groups helps in identifying trends in reactivity, electronegativity, and ionization energy.
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p-block Elements

The p-block elements encompass groups 3A to 8A in the periodic table. These elements include a diverse range of metals, metalloids, and nonmetals, characterized by their valence electrons occupying p orbitals. The p-block is crucial for understanding the behavior of many important elements, including carbon, nitrogen, and halogens.
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Block Designation in the Periodic Table

The periodic table is divided into blocks based on the electron configuration of the elements. The s-block includes groups 1A and 2A, while the p-block includes groups 3A to 8A. Recognizing these blocks aids in predicting chemical properties and reactivity patterns, as elements within the same block often exhibit similar behaviors.
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Related Practice
Textbook Question

Consider the Mg2+, Cl-, K+, and Se2- ions. The four spheres below represent these four ions, scaled according to ionic size. (b) In terms of size, between which of the spheres would you find the (i) Ca2+ and (ii) S2- ions?

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Textbook Question

In the following reaction

which sphere represents a metal and which represents a nonmetal?

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Textbook Question

The graph below shows the ionization energies for a particular element. In which group is the element most likely a member of? [Section 7.3]

Textbook Question

The prefix eka- comes from the Sanskrit word for 'one.' Mendeleev used this prefix to indicate that the unknown element was one place away from the known element that followed the prefix. For example, eka-silicon, which we now call germanium, is one element below silicon. Mendeleev also predicted the existence of eka-manganese, which was not experimentally confirmed until 1937 because this element is radioactive and does not occur in nature. Based on the periodic table shown in Figure 7.1, what do we now call the element Mendeleev called eka-manganese?

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Textbook Question

Which of the following statements about effective nuclear charge for the outermost valence electron of an atom is incorrect? (i) The effective nuclear charge can be thought of as the true nuclear charge minus a screening constant due to the other electrons in the atom. (ii) Effective nuclear charge increases going left to right across a row of the periodic table. (iii) Valence electrons screen the nuclear charge more effectively than do core electrons. (iv) The effective nuclear charge shows a sudden decrease when we go from the end of one row to the beginning of the next row of the periodic table. (v) The change in effective nuclear charge going down a column of the periodic table is generally less than that going across a row of the periodic table

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