To solve the problem, I need to understand the task associated with the periodic table image you uploaded. Since the task is not explicitly stated in your question, I will assume a common type of problem related to the periodic table: identifying elements based on their properties or positions.
Assumed Task:
Identify the following elements based on their atomic numbers and explain their properties:
1. Element with atomic number 1
2. Element with atomic number 17
3. Element with atomic number 26
Solution:
#### Step 1: Identify the Elements
Using the periodic table provided:
1.
Element with atomic number 1:
- The element with atomic number 1 is
Hydrogen (H).
- It is located in Period 1, Group 1 (Alkali Metals).
2.
Element with atomic number 17:
- The element with atomic number 17 is
Chlorine (Cl).
- It is located in Period 3, Group 17 (Halogens).
3.
Element with atomic number 26:
- The element with atomic number 26 is
Iron (Fe).
- It is located in Period 4, Group 8 (Transition Metals).
#### Step 2: Explain the Properties of Each Element
1.
Hydrogen (H):
-
Atomic Number: 1
-
Position: Period 1, Group 1 (Alkali Metals)
-
Properties:
- Hydrogen is the lightest and most abundant element in the universe.
- It is a nonmetal but behaves similarly to alkali metals in some reactions.
- It exists as diatomic molecules (\(H_2\)) under standard conditions.
- It is highly reactive and can form compounds with almost all other elements.
2.
Chlorine (Cl):
-
Atomic Number: 17
-
Position: Period 3, Group 17 (Halogens)
-
Properties:
- Chlorine is a highly reactive nonmetal.
- It is a yellow-green gas at room temperature.
- It is a strong oxidizing agent and is used in disinfectants and bleaches.
- Chlorine forms many important compounds, such as sodium chloride (table salt, \(NaCl\)) and hydrochloric acid (\(HCl\)).
3.
Iron (Fe):
-
Atomic Number: 26
-
Position: Period 4, Group 8 (Transition Metals)
-
Properties:
- Iron is a transition metal known for its magnetic properties and strength.
- It is one of the most abundant elements on Earth and is essential for life (e.g., in hemoglobin).
- Iron is a good conductor of heat and electricity.
- It is widely used in construction, machinery, and tools due to its durability and malleability.
Final Answer:
\[
\boxed{
\text{1. Hydrogen (H), 2. Chlorine (Cl), 3. Iron (Fe)}
}
\]
This solution identifies the elements based on their atomic numbers and provides a brief explanation of their properties. If the task was different, please provide additional details so I can adjust the solution accordingly.
Parent Tip: Review the logic above to help your child master the concept of printable periodic table for ks3.
