To solve this problem, let's go through each description one by one. I'll identify if any element that matches the description has an atomic number of 92 or less, mark "Yes" or "No" accordingly, and if "Yes," I'll provide the chemical symbol of one such element.
1. An element in Period 4 and Group 6A.
- We need to find an element that is in Period 4 and in Group 6A.
- Selenium (Se) is in Period 4 and Group 6A.
- Therefore, the answer is "Yes" and the symbol is "Se".
2. A semimetal in Group 4A.
- We need to find a semimetal in Group 4A.
- Germanium (Ge) is a semimetal and it is in Group 4A.
- Therefore, the answer is "Yes" and the symbol is "Ge".
3. A noble gas with a lower atomic number than silicon.
- Silicon (Si) has an atomic number of 14. We need a noble gas with an atomic number less than 14.
- Helium (He) is a noble gas with an atomic number of 2, which is less than 14.
- Therefore, the answer is "Yes" and the symbol is "He".
4. A transition element in Period 4.
- We need to find a transition element that is in Period 4.
- Titanium (Ti) is a transition element in Period 4.
- Therefore, the answer is "Yes" and the symbol is "Ti".
Let's fill the table based on these answers:
\begin{tabular}{|c|c|c|c|}
\hline description & \multicolumn{2}{|c|}{\begin{tabular}{l}
Does any element \\
with atomic number \\
92 or less match \\
the description?
\end{tabular}} & \begin{tabular}{l}
If you checked Yes, give \\
the symbol of an \\
element with atomic \\
number [tex]$\leq$[/tex] 92 that matches.
\end{tabular} \\
\hline An element in Period 4 and Group 6A. & Yes & & Se \\
\hline A semimetal in Group 4A. & Yes & & Ge \\
\hline \begin{tabular}{l}
A noble gas with a lower atomic \\
number than silicon.
\end{tabular} & Yes & & He \\
\hline A transition element in Period 4. & Yes & & Ti \\
\hline
\end{tabular}
