Which Element Has the Following Electron Configuration: 1S₂ 2S₂ 2p6

question 22

Multiple Choice

Which element has the following electron configuration: 1S₂ 2S₂ 2p6 3S₂ 3p6 4s1?

• A)Al
• B)Ca
• C)K
• D)Na
• E)none of the above

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