Question

what is another name for group 8a?
a. group 18a
b. group 8
c. group 8b
d. group 18

Explanation:

In the modern IUPAC - naming system for the periodic - table groups, Group 8A is also known as Group 18. The older A - B numbering system is being replaced by the 1 - 18 numbering system.

Answer:

D. Group 18