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5 marksAtomic Structure and the Periodic Table

CAPE Chemistry Unit 1 · 2015 · Paper 2 · Question 4(b)(ii)

Electronic configurations are given: K: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹; Sc: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹ 4s²; Zn²⁺: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰.

Comment on the similarity and difference in the electronic configurations of K, Sc and Zn²⁺ given below.

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  1. 4(a)(i)Describe the THREE types of radiation that an unstable atom may emit. Include in your answer the symbols and penetrating power of EACH type of radiation.[6 marks]
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