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Sagot :
Let's identify each element based on its electron configuration by referring to the periodic table.
1. Electron Configuration: [tex]\( 1s^2 2s^2 2p^6 \)[/tex]
This configuration has a total of [tex]\(2 + 2 + 6 = 10\)[/tex] electrons. An element with 10 electrons is Neon, represented by the chemical symbol Ne.
2. Electron Configuration: [tex]\( 1s^2 2s^2 2p^6 3s^2 3p^3 \)[/tex]
This configuration totals [tex]\(2 + 2 + 6 + 2 + 3 = 15\)[/tex] electrons. An element with 15 electrons is Phosphorus, represented by the chemical symbol P.
3. Electron Configuration: [tex]\( 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 \)[/tex]
This configuration totals [tex]\(2 + 2 + 6 + 2 + 6 + 1 = 19\)[/tex] electrons. An element with 19 electrons is Potassium, represented by the chemical symbol K.
4. Electron Configuration: [tex]\( 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^6 \)[/tex]
This configuration totals [tex]\(2 + 2 + 6 + 2 + 6 + 2 + 6 = 26\)[/tex] electrons. An element with 26 electrons is Iron, represented by the chemical symbol Fe.
5. Electron Configuration: [tex]\( 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10} 4p^6 5s^2 4d^3 \)[/tex]
This configuration totals [tex]\(2 + 2 + 6 + 2 + 6 + 2 + 10 + 6 + 2 + 3 = 39\)[/tex] electrons. An element with 39 electrons is Yttrium, represented by the chemical symbol Y.
So, based on the periodic table and the electron configurations, the elements are:
- [tex]\( 1s^2 2s^2 2p^6 \)[/tex]: Ne
- [tex]\( 1s^2 2s^2 2p^6 3s^2 3p^3 \)[/tex]: P
- [tex]\( 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 \)[/tex]: K
- [tex]\( 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^6 \)[/tex]: Fe
- [tex]\( 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10} 4p^6 5s^2 4d^3 \)[/tex]: Y
1. Electron Configuration: [tex]\( 1s^2 2s^2 2p^6 \)[/tex]
This configuration has a total of [tex]\(2 + 2 + 6 = 10\)[/tex] electrons. An element with 10 electrons is Neon, represented by the chemical symbol Ne.
2. Electron Configuration: [tex]\( 1s^2 2s^2 2p^6 3s^2 3p^3 \)[/tex]
This configuration totals [tex]\(2 + 2 + 6 + 2 + 3 = 15\)[/tex] electrons. An element with 15 electrons is Phosphorus, represented by the chemical symbol P.
3. Electron Configuration: [tex]\( 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 \)[/tex]
This configuration totals [tex]\(2 + 2 + 6 + 2 + 6 + 1 = 19\)[/tex] electrons. An element with 19 electrons is Potassium, represented by the chemical symbol K.
4. Electron Configuration: [tex]\( 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^6 \)[/tex]
This configuration totals [tex]\(2 + 2 + 6 + 2 + 6 + 2 + 6 = 26\)[/tex] electrons. An element with 26 electrons is Iron, represented by the chemical symbol Fe.
5. Electron Configuration: [tex]\( 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10} 4p^6 5s^2 4d^3 \)[/tex]
This configuration totals [tex]\(2 + 2 + 6 + 2 + 6 + 2 + 10 + 6 + 2 + 3 = 39\)[/tex] electrons. An element with 39 electrons is Yttrium, represented by the chemical symbol Y.
So, based on the periodic table and the electron configurations, the elements are:
- [tex]\( 1s^2 2s^2 2p^6 \)[/tex]: Ne
- [tex]\( 1s^2 2s^2 2p^6 3s^2 3p^3 \)[/tex]: P
- [tex]\( 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 \)[/tex]: K
- [tex]\( 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^6 \)[/tex]: Fe
- [tex]\( 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10} 4p^6 5s^2 4d^3 \)[/tex]: Y
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