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Ch.7 - Periodic Properties of the Elements
Brown - Chemistry: The Central Science 15th Edition
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Brown 15th EditionCh.7 - Periodic Properties of the Elements문제 94b
7장, 문제 94b

Identify two ions that have the following ground-state electron configurations: (b) [Ar]3d5

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1
Identify the neutral atom with the given electron configuration.
Recognize that the configuration [Ar]3d^5 corresponds to the element Manganese (Mn) in its neutral state.
Determine the possible ions by adding or removing electrons from the neutral atom.
Consider the removal of electrons to form a cation: Mn^2+ is a common ion, which would have the configuration [Ar]3d^5 after losing two 4s electrons.
Consider the addition of electrons to form an anion: Technically, Mn does not commonly form anions, but if it did, adding electrons would fill the 3d orbitals further.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Electron Configuration

Electron configuration describes the distribution of electrons in an atom's orbitals. It is represented using a notation that indicates the energy levels and sublevels occupied by electrons. For example, [Ar]3d5 indicates that the electron configuration follows the argon core, with five electrons in the 3d subshell, which is crucial for identifying specific ions.
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가이드 코스
01:33
Electron Configuration Example

Ionic Charge

Ionic charge refers to the electrical charge that an atom or molecule acquires when it loses or gains electrons. Cations are positively charged ions formed by losing electrons, while anions are negatively charged ions formed by gaining electrons. Understanding the ionic charge is essential for determining which ions correspond to a given electron configuration.
추천 영상:
가이드 코스
01:53
Formal Charge

Transition Metals

Transition metals are elements found in the d-block of the periodic table, characterized by their ability to form variable oxidation states and colored compounds. The electron configuration [Ar]3d5 corresponds to a half-filled d subshell, which is a stable configuration often seen in transition metal ions like Mn2+ and Cr3+. Recognizing these elements helps in identifying the ions with the specified electron configuration.
추천 영상:
가이드 코스
03:12
Transition Metals
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