Question

match the correct electron configuration with the correct element * 6 points nickel oxygen phosphorus strontium silicon germanium kr 5s² he 2s² 2p⁴ ar 4s² 3d⁸ ne 3s² 3p² ne 3s² 3p³ ar 4s² 3d¹⁰ 4p²

Explanation:

• For \([\text{Kr}]5\text{s}^2\): Strontium (\(\text{Sr}\)) has an atomic number of \(38\). Krypton (\(\text{Kr}\)) has an atomic number of \(36\). Adding \(2\) electrons in the \(5\text{s}\) orbital gives the electron configuration of strontium.
• For \([\text{He}]2\text{s}^22\text{p}^4\): Oxygen (\(\text{O}\)) has an atomic number of \(8\). Helium (\(\text{He}\)) has an atomic number of \(2\). \(2 + 2+4=8\) electrons, which is the number of electrons in an oxygen atom.
• For \([\text{Ar}]4\text{s}^23\text{d}^8\): Nickel (\(\text{Ni}\)) has an atomic number of \(28\). Argon (\(\text{Ar}\)) has an atomic number of \(18\). \(18 + 2+8 = 28\) electrons, which is the number of electrons in a nickel atom.
• For \([\text{Ne}]3\text{s}^23\text{p}^2\): Silicon (\(\text{Si}\)) has an atomic number of \(14\). Neon (\(\text{Ne}\)) has an atomic number of \(10\). \(10+2 + 2=14\) electrons, which is the number of electrons in a silicon atom.
• For \([\text{Ne}]3\text{s}^23\text{p}^3\): Phosphorus (\(\text{P}\)) has an atomic number of \(15\). Neon (\(\text{Ne}\)) has an atomic number of \(10\). \(10+2+3 = 15\) electrons, which is the number of electrons in a phosphorus atom.
• For \([\text{Ar}]4\text{s}^23\text{d}^{10}4\text{p}^2\): Germanium (\(\text{Ge}\)) has an atomic number of \(32\). Argon (\(\text{Ar}\)) has an atomic number of \(18\). \(18+2 + 10+2=32\) electrons, which is the number of electrons in a germanium atom.

Answer:

• \([\text{Kr}]5\text{s}^2\): Strontium
• \([\text{He}]2\text{s}^22\text{p}^4\): Oxygen
• \([\text{Ar}]4\text{s}^23\text{d}^8\): Nickel
• \([\text{Ne}]3\text{s}^23\text{p}^2\): Silicon
• \([\text{Ne}]3\text{s}^23\text{p}^3\): Phosphorus
• \([\text{Ar}]4\text{s}^23\text{d}^{10}4\text{p}^2\): Germanium