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Sagot :
Sure! Based on the elements provided, here is the detailed step-by-step explanation for locating these representative elements on the periodic table:
1. Element 1: Gallium ([tex]$31_1^{69,72}$[/tex])
- Atomic Number: 31
- Atomic Mass: 69.72
- Position on the Periodic Table:
- It lies in Group 13.
- It is located in Period 4.
- Electron Configuration: [tex]\( [Ar] 3d^{10} 4s^2 4p^1 \)[/tex]
- Gallium is a post-transition metal.
2. Element 2: Argon ([tex]$18 \quad 39,998$[/tex])
- Atomic Number: 18
- Atomic Mass: 39.998
- Position on the Periodic Table:
- It lies in Group 18.
- It is located in Period 3.
- Electron Configuration: [tex]\( [Ne] 3s^2 3p^6 \)[/tex]
- Argon is a noble gas.
3. Element 3: Fluorine ([tex]$9$[/tex])
- Atomic Number: 9
- Atomic Mass: roughly 19 (not shown clearly in the table, but known from the periodic table)
- Position on the Periodic Table:
- It lies in Group 17.
- It is located in Period 2.
- Electron Configuration: [tex]\( 1s^2 2s^2 2p^5 \)[/tex]
- Fluorine is a halogen.
4. Element 4: Calcium (Symbol: Ca, Electronic Configuration: (Ar) [tex]$4 s^2$[/tex])
- Atomic Number: 20
- Atomic Mass: approximately 40 (not shown in the table, but known from the periodic table)
- Position on the Periodic Table:
- It lies in Group 2.
- It is located in Period 4.
- Electron Configuration: [tex]\( [Ar] 4s^2 \)[/tex]
- Calcium is an alkaline earth metal.
By knowing the atomic number, you can directly locate these elements on the periodic table by referring to their group and period numbers. Understanding their electronic configuration further helps in confirming their positions.
1. Element 1: Gallium ([tex]$31_1^{69,72}$[/tex])
- Atomic Number: 31
- Atomic Mass: 69.72
- Position on the Periodic Table:
- It lies in Group 13.
- It is located in Period 4.
- Electron Configuration: [tex]\( [Ar] 3d^{10} 4s^2 4p^1 \)[/tex]
- Gallium is a post-transition metal.
2. Element 2: Argon ([tex]$18 \quad 39,998$[/tex])
- Atomic Number: 18
- Atomic Mass: 39.998
- Position on the Periodic Table:
- It lies in Group 18.
- It is located in Period 3.
- Electron Configuration: [tex]\( [Ne] 3s^2 3p^6 \)[/tex]
- Argon is a noble gas.
3. Element 3: Fluorine ([tex]$9$[/tex])
- Atomic Number: 9
- Atomic Mass: roughly 19 (not shown clearly in the table, but known from the periodic table)
- Position on the Periodic Table:
- It lies in Group 17.
- It is located in Period 2.
- Electron Configuration: [tex]\( 1s^2 2s^2 2p^5 \)[/tex]
- Fluorine is a halogen.
4. Element 4: Calcium (Symbol: Ca, Electronic Configuration: (Ar) [tex]$4 s^2$[/tex])
- Atomic Number: 20
- Atomic Mass: approximately 40 (not shown in the table, but known from the periodic table)
- Position on the Periodic Table:
- It lies in Group 2.
- It is located in Period 4.
- Electron Configuration: [tex]\( [Ar] 4s^2 \)[/tex]
- Calcium is an alkaline earth metal.
By knowing the atomic number, you can directly locate these elements on the periodic table by referring to their group and period numbers. Understanding their electronic configuration further helps in confirming their positions.
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