Certainly! Let us analyze each given description to determine if any element with an atomic number of 92 or less matches it, and then provide the symbol of such an element if there is a match.
1. An element in Period 3 and Group 6A.
- We need to find an element that is in Period 3 (third row from the top in the periodic table) and in Group 6A (also known as Group 16 in the modern IUPAC numbering).
- In Period 3, Group 6A contains the element Sulfur.
- Therefore, we check Yes and give the symbol S (Sulfur).
[tex]\[
\begin{tabular}{|c|c|c|c|}
\hline
description & \multicolumn{2}{|c|}{\begin{tabular}{l}
Does any element \\
with $2 \leq 92$ \\
match the description?
\end{tabular}} & \begin{tabular}{l}
If you checked yes, give \\
the symbol of an \\
element with $2 \leq 92$ \\
that matches.
\end{tabular} \\
\hline
An element in Period 3 and Group 6A. & Yes & No & S \\
\hline
\end{tabular}
\][/tex]
2. A metalloid in Group 3A.
- Group 3A is also known as Group 13 in the modern IUPAC numbering.
- A metalloid is an element with properties intermediate between those of metals and nonmetals.
- In Group 3A, the metalloid is Boron.
- Therefore, we check Yes and give the symbol B (Boron).
[tex]\[
\begin{tabular}{|c|c|c|c|}
\hline
description & \multicolumn{2}{|c|}{\begin{tabular}{l}
Does any element \\
with $2 \leq 92$ \\
match the description?
\end{tabular}} & \begin{tabular}{l}
If you checked yes, give \\
the symbol of an \\
element with $2 \leq 92$ \\
that matches.
\end{tabular} \\
\hline
An element in Period 3 and Group 6A. & Yes & No & S \\
\hline
A metalloid in Group sA. & Yes & No & B \\
\hline
\end{tabular}
\][/tex]
3. An alkaline earth metal with a lower atomic number than boron.
- Alkaline earth metals are in Group 2A (also known as Group 2).
- Boron has an atomic number of 5. Therefore, we need an alkaline earth metal with an atomic number less than 5.
- The alkaline earth metals with atomic numbers less than 5 are Beryllium (Z=4).
- Therefore, we check Yes and give the symbol Be (Beryllium).
[tex]\[
\begin{tabular}{|c|c|c|c|}
\hline
description & \multicolumn{2}{|c|}{\begin{tabular}{l}
Does any element \\
with $2 \leq 92$ \\
match the description?
\end{tabular}} & \begin{tabular}{l}
If you checked yes, give \\
the symbol of an \\
element with $2 \leq 92$ \\
that matches.
\end{tabular} \\
\hline
An element in Period 3 and Group 6A. & Yes & No & S \\
\hline
A metalloid in Group 3A. & Yes & No & B \\
\hline
\begin{tabular}{l}
An alkaline earth metal with a lower \\
atomic number than boron.
\end{tabular} & Yes & No & Be \\
\hline
\end{tabular}
\][/tex]
4. A transition element in Period 6.
- Transition elements are found in the d-block of the periodic table.
- Period 6 contains transition elements such as Hafnium (Hf, Z=72) and others up until Mercury (Hg, Z=80).
- However, there is no element between 2 and 92 that matches the transition element criteria in Period 6.
- Therefore, we check No.
[tex]\[
\begin{tabular}{|c|c|c|c|}
\hline
description & \multicolumn{2}{|c|}{\begin{tabular}{l}
Does any element \\
with $2 \leq 92$ \\
match the description?
\end{tabular}} & \begin{tabular}{l}
If you checked yes, give \\
the symbol of an \\
element with $2 \leq 92$ \\
that matches.
\end{tabular} \\
\hline
An element in Period 3 and Group 6A. & Yes & No & S \\
\hline
A metalloid in Group 3A. & Yes & No & B \\
\hline
\begin{tabular}{l}
An alkaline earth metal with a lower \\
atomic number than boron.
\end{tabular} & Yes & No & Be \\
\hline
A transition element in Period 6. & Yes & No & \\
\hline
\end{tabular}
\][/tex]
