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题目
题目

CHEM 1210 AU2025 (15738) CHEM 1210 Practice Exam #4 v2 (Ch 7.1–7.4, 8, 9.1–9.6)- Requires Respondus LockDown Browser

多重下拉选择题

Identify the following statements as either true or false: I: The 1s orbital of an Na atom is smaller than a 1s orbital of an Mg atom. [ Select ] II: In a Ni atom, the effective nuclear charge experienced by the 4s subshell is larger than the effective nuclear charge experienced by the 3d subshell. [ Select ] III: The effective nuclear charge experienced by the core electrons is larger for P than it is for Cl. [ Select ] IV: In an F atom, the effective nuclear charge experienced by an electron in the 2p subshell is larger than it is for an electron in the 2s subshell. [ Select ]

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标准答案
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思路分析
The prompt asks us to judge each statement as true or false and then explain the reasoning for every option. Option I: 'The 1s orbital of a Na atom is smaller than a 1s orbital of an Mg atom.' Na has configuration [Ne] 3s1 and Mg is [Ne] 3s2. The 1s orbitals are part of the inner core and experience a relatively large effective nuclear charge, which grows with total nuclear charge. Since Mg has a higher atomic number (more protons) than Na, the 1s electrons in Mg experience a stro......Login to view full explanation

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