13,949 views
29 votes
29 votes
Which of the following is a nonmetal?

A.
potassium (K)
B.
aluminum (Al)
C.
calcium (Ca)
D.
chlorine (Cl)

User Rio
by
2.6k points

2 Answers

10 votes
10 votes

Final answer:

Chlorine (Cl), option D, is the nonmetal among the choices listed. It belongs to the halogen group, which consists of nonmetals known for forming compounds with metals.

Step-by-step explanation:

To determine which of the following is a nonmetal, we should look at their placement in the periodic table and their properties:

  • Potassium (K) is in group 1, known as the alkali metals.
  • Aluminum (Al) is a post-transition metal.
  • Calcium (Ca) is in group 2, known as the alkaline earth metals.
  • Chlorine (Cl) is in group 17, known as the halogens, which are nonmetals.

Therefore, the answer is D. Chlorine (Cl), which is a nonmetal and part of the halogen group. Halogens are known for readily reacting with metals to form various compounds, including salts.

User Brock Nusser
by
2.5k points
12 votes
12 votes
D. chlorine (Cl)

Chlorine is a nonmetal. Chlorine is a halogen in family VIIA, which is on the right side of the metalloids on the periodic table.
User Natalia Larrieux
by
3.6k points