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Chapter 2: Problem 23

Which group in the periodic table (a) has one metalloid and no nonmetals? (b) has no nonmetals or transition metals? (c) has no metals or metalloids?

Short Answer

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Question: Identify the groups from the periodic table that satisfy the following characteristics: a) Contains one metalloid and no nonmetals. b) Contains only metals but no transition metals. c) Contains only nonmetals with no metals or metalloids. Answer: a) Group 13 contains one metalloid (Boron) and no nonmetals. b) Group 1 (Alkali metals) contains only metals and no transition metals. c) Group 18 (Noble gases) contains only nonmetals with no metals or metalloids.

Step by step solution

01

(a) Group with one metalloid and no nonmetals

The metalloid we are looking for is present in a group where the other elements are metals. In the periodic table, group 13 fulfills these criteria. Group 13 elements are Boron (B, metalloid), Aluminum (Al, metal), Gallium (Ga, metal), Indium (In, metal), and Thallium (Tl, metal). As seen, Group 13 has Boron as the only metalloid and no nonmetals.
02

(b) Group with no nonmetals or transition metals

For this case, we are looking for a group where all elements must be metals and should not be part of the transition metals (located in the middle of the periodic table). The group that matches these characteristics is group 1, also known as the alkali metals. Group 1 elements are Hydrogen (H, nonmetal), Lithium (Li, metal), Sodium (Na, metal), Potassium (K, metal), Rubidium (Rb, metal), Cesium (Cs, metal), and Francium (Fr, metal). Except for Hydrogen, which is not considered a transition metal, all the other elements are metals, and none of them belong to the transition metals.
03

(c) Group with no metals or metalloids

In this case, we are looking for groups where all elements should be nonmetals. The group that fits this condition is group 18, also known as the noble gases. Group 18 elements are Helium (He, nonmetal), Neon (Ne, nonmetal), Argon (Ar, nonmetal), Krypton (Kr, nonmetal), Xenon (Xe, nonmetal), and Radon (Rn, nonmetal). All the elements in group 18 are nonmetals and have no metals or metalloids.

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