Which Two Electron Configurations Represent Elements That Would Have Similar

question 126

Multiple Choice

Which two electron configurations represent elements that would have similar chemical properties
(1) 1s²2s²2p⁴ (2) 1s²2s²2p⁵ (3) [Ar]4s²3d⁵ (4) [Ar]4s²3d¹⁰4p⁵

• A) (1) and (2)
• B) (1) and (3)
• C) (2) and (3)
• D) (2) and (4)
• E) (3) and (4)

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