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Use the periodic table to identify the element indicated by each electron configuration by typing in the chemical symbol for the element.

[tex]\[
\begin{array}{l}
1s^2 2s^2 2p^6: \square \\
1s^2 2s^2 2p^6 3s^2 3p^3: \square \\
1s^2 2s^2 2p^6 3s^2 3p^6 4s^1: \square \\
1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^6: \square \\
1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10} 4p^6 5s^2 4d^3: \square \\
\end{array}
\][/tex]



Answer :

GinnyAnswer
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

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