What Element Has the Electron Configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵

question 54

Multiple Choice

What element has the electron configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵?

• A) Cl
• B) Se
• C) I
• D) Kr
• E) Br

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