Determine if there is an element in Period 5 and Group 1A with \( Z \leq 92 \).
Identify Period 5, Group 1A element
Period 5, Group 1A of the periodic table contains alkali metals. The element in this position is Rubidium (Rb).
Check atomic number
Rubidium (Rb) has an atomic number \( Z = 37 \), which is less than 92.
\(\boxed{\text{Yes, Rb}}\)
Determine if there is a semimetal in Group 8A with \( Z \leq 92 \).
Identify Group 8A elements
Group 8A of the periodic table contains noble gases, which are not semimetals.
Check for semimetals
Semimetals are typically found in groups 13-16, not in Group 8A. Therefore, there are no semimetals in Group 8A.
\(\boxed{\text{No}}\)
Yes, Rb
No