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Read each description in the first column of the table below. If any chemical element with an atomic number of 92 or less matches the description, check Yes and enter the chemical symbol of an element that matches. Otherwise, check No in the second column.

\begin{tabular}{|c|c|c|c|}
\hline
Description & \multicolumn{2}{|c|}{\begin{tabular}{c}
Does any element \\
with [tex]$Z \leq 92$[/tex] match \\
the description?
\end{tabular}} & \begin{tabular}{c}
If you checked Yes, give \\
the symbol of an \\
element with [tex]$Z \leq 92$[/tex] \\
that matches.
\end{tabular} \\
\hline
An element in Period 1 and Group 5A & Yes & No & [tex]$\square$[/tex] \\
\hline
A metalloid in Group 5A & Yes & No & [tex]$\square$[/tex] \\
\hline
\begin{tabular}{c}
An alkali metal with a higher atomic \\
number than krypton
\end{tabular} & Yes & No & [tex]$\square$[/tex] \\
\hline
A main-group element in Period 5 & Yes & No & [tex]$\square$[/tex] \\
\hline
\end{tabular}



Answer :

GinnyAnswer
Let's go through each description to determine if any chemical element with an atomic number (Z) of 92 or less matches.

1. Description: An element in Period 1 and Group 5A
- Analysis: Period 1 elements are Hydrogen (H) and Helium (He). Neither of these elements is in Group 5A.
- Conclusion: No, there is no element in Period 1 and Group 5A.
- Table Entry: Yes ☐ No ☒

2. Description: A metalloid in Group 5A
- Analysis: The metalloid in Group 5A is Arsenic (As).
- Conclusion: Yes, Arsenic (As) is a metalloid in Group 5A.
- Table Entry: Yes ☒ No ☐ Symbol: As

3. Description: An alkali metal with a higher atomic number than krypton
- Analysis: Krypton has an atomic number of 36. The next alkali metal after Krypton is Cesium (Cs) with an atomic number of 55.
- Conclusion: Yes, Cesium (Cs) is an alkali metal with a higher atomic number than Krypton.
- Table Entry: Yes ☒ No ☐ Symbol: Cs

4. Description: A main-group element in Period 5
- Analysis: Period 5 elements range from atomic numbers 37 (Rubidium) to 54 (Xenon). The main-group elements in this range include Rubidium (Rb), Strontium (Sr), Indium (In), Tin (Sn), Antimony (Sb), Tellurium (Te), and Iodine (I).
- Conclusion: Yes, there are several main-group elements in Period 5.
- Table Entry: Yes ☒ No ☐ Symbol: Rb, Sr, In, Sn, Sb, Te, I

Here's the filled table based on our analysis:

[tex]\[ \begin{array}{|c|c|c|c|} \hline \text{Description} & \multicolumn{2}{|c|}{\begin{tabular}{l} \text{Does any element} \\ \text{with } Z \leq 92 \text{ match} \\ \text{the description?} \end{tabular}} & \begin{tabular}{l} \text{If you checked yes, give} \\ \text{the symbol of an} \\ \text{element with } Z \leq 92 \\ \text{that matches.} \end{tabular} \\ \hline \text{An element in Period 1 and Group 5A} & \text{Yes} & \text{No} ☒ & \text{ } \\ \hline \text{A metalloid in Group 5A} & \text{Yes} ☒ & \text{No} & \text{As} \\ \hline \begin{tabular}{l} \text{An alkali metal with a higher atomic}\\ \text{number than krypton.} \end{tabular} & \text{Yes} ☒ & \text{No} & \text{Cs} \\ \hline \text{A main-group element in Period 5} & \text{Yes} ☒ & \text{No} & \text{Rb, Sr, In, Sn, Sb, Te, I} \\ \hline \end{array} \][/tex]

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