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35. Transition Metals - 4! 2부

35. Transition Metals / Electron Configuration of Elements / 문제 3

문제 3

You are given an unknown element that forms a +1 cation with the electron configuration [Kr] 4d¹⁰ 5s² 5p⁶. Which element is this?

A

Cesium (Cs)

B

Barium (Ba)

C

Strontium (Sr)

D

Rubidium (Rb)