Question

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

Question: Identify the group in the periodic table that meets the following criteria: a) The group with one metalloid and no nonmetals. b) The group with no nonmetals or transition metals. c) The group with no metals or metalloids. Answer: a) Group 13 has one metalloid (boron) and no nonmetals. b) Both Group 1 (alkali metals) and Group 2 (alkaline earth metals) have no nonmetals or transition metals. c) Group 18 (noble gases) consists of only nonmetals and has no metals or metalloids.

Step-by-step solution

(a) Group with one metalloid and no nonmetals

To answer this question, we need to know where metalloids are generally located in the periodic table. Metalloids are found between metals and nonmetals, which is along the staircase line that starts from boron (group 13) to astatine (group 17). Looking at the groups, we can see that the only group with just one metalloid and no nonmetals is Group 13, where the metalloid is boron.

(b) Group with no nonmetals or transition metals

Nonmetals are generally located in groups 14-18 of the periodic table and transition metals are located in groups 3-12. According to the given criteria, we need to find a group that does not belong to either of these sets of groups. This leaves us with groups 1 and 2. Group 1 is known as the alkali metals and group 2 is known as the alkaline earth metals. Thus, both group 1 (alkali metals) and group 2 (alkaline earth metals) have no nonmetals or transition metals.

(c) Group with no metals or metalloids

To find the group with no metals or metalloids, we should look at the location of nonmetals in the periodic table. Nonmetals are found in groups 14-18. As we move from left to right in these groups, the number of nonmetals increases. Group 18, which consists of the noble gases (such as helium, neon, argon, krypton, xenon, and radon), contains only nonmetals. Therefore, Group 18 (noble gases) is the group with no metals or metalloids.