Problem Description:
The task involves understanding and labeling the periodic table based on the given instructions. Specifically, you are asked to label the
main groups (also known as "A" group elements or main group elements) using both the
new numbering system (groups 1–18) and the
old numbering system (groups 1A–8A). The transition metals (or "B" group elements) should not be re-labeled.
Solution Approach:
1.
Identify Main Groups in the New Numbering System:
- The main groups are located on the left and right sides of the periodic table.
- These groups are numbered from 1 to 18 in the new system.
- The main groups are:
1, 2, 13, 14, 15, 16, 17, 18.
2.
Map Main Groups to the Old Numbering System:
- Group 1 corresponds to Group 1A.
- Group 2 corresponds to Group 2A.
- Group 13 corresponds to Group 3A.
- Group 14 corresponds to Group 4A.
- Group 15 corresponds to Group 5A.
- Group 16 corresponds to Group 6A.
- Group 17 corresponds to Group 7A.
- Group 18 corresponds to Group 8A.
3.
Label the Periodic Table:
- For each main group, write both the new group number and the old group number next to it.
- Do not re-label the transition metals (groups 3–12).
Step-by-Step Solution:
#### 1. Identify Main Groups in the New Numbering System:
-
Group 1: Hydrogen (H), alkali metals (Li, Na, K, Rb, Cs, Fr).
-
Group 2: Alkaline earth metals (Be, Mg, Ca, Sr, Ba, Ra).
-
Group 13: Boron (B), aluminum (Al), gallium (Ga), indium (In), thallium (Tl), nihonium (Nh).
-
Group 14: Carbon (C), silicon (Si), germanium (Ge), tin (Sn), lead (Pb), flerovium (Fl).
-
Group 15: Nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), bismuth (Bi), moscovium (Mc).
-
Group 16: Oxygen (O), sulfur (S), selenium (Se), tellurium (Te), polonium (Po), livermorium (Lv).
-
Group 17: Halogens (F, Cl, Br, I, At, Ts).
-
Group 18: Noble gases (He, Ne, Ar, Kr, Xe, Rn, Og).
#### 2. Map to the Old Numbering System:
-
Group 1 (New) →
Group 1A (Old)
-
Group 2 (New) →
Group 2A (Old)
-
Group 13 (New) →
Group 3A (Old)
-
Group 14 (New) →
Group 4A (Old)
-
Group 15 (New) →
Group 5A (Old)
-
Group 16 (New) →
Group 6A (Old)
-
Group 17 (New) →
Group 7A (Old)
-
Group 18 (New) →
Group 8A (Old)
#### 3. Label the Periodic Table:
- For each main group, write both the new group number and the old group number.
- Example:
- Under Group 1: Write "1 (1A)"
- Under Group 2: Write "2 (2A)"
- Under Group 13: Write "13 (3A)"
- And so on...
#### Final Labels for Main Groups:
| New Group | Old Group | Elements in Group |
|-----------|-----------|-------------------|
| 1 | 1A | H, Li, Na, K, Rb, Cs, Fr |
| 2 | 2A | Be, Mg, Ca, Sr, Ba, Ra |
| 13 | 3A | B, Al, Ga, In, Tl, Nh |
| 14 | 4A | C, Si, Ge, Sn, Pb, Fl |
| 15 | 5A | N, P, As, Sb, Bi, Mc |
| 16 | 6A | O, S, Se, Te, Po, Lv |
| 17 | 7A | F, Cl, Br, I, At, Ts |
| 18 | 8A | He, Ne, Ar, Kr, Xe, Rn, Og |
Final Answer:
\[
\boxed{
\begin{array}{c|c|c}
\text{New Group} & \text{Old Group} & \text{Elements in Group} \\
\hline
1 & 1A & H, Li, Na, K, Rb, Cs, Fr \\
2 & 2A & Be, Mg, Ca, Sr, Ba, Ra \\
13 & 3A & B, Al, Ga, In, Tl, Nh \\
14 & 4A & C, Si, Ge, Sn, Pb, Fl \\
15 & 5A & N, P, As, Sb, Bi, Mc \\
16 & 6A & O, S, Se, Te, Po, Lv \\
17 & 7A & F, Cl, Br, I, At, Ts \\
18 & 8A & He, Ne, Ar, Kr, Xe, Rn, Og \\
\end{array}
}
\]
This completes the task of labeling the main groups in both numbering systems. Transition metals remain unlabeled as per the instructions.
Parent Tip: Review the logic above to help your child master the concept of getting to know the periodic table worksheet.
