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Ch.8 - Periodic Properties of the Elements
Tro - Chemistry: A Molecular Approach 4th Edition
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Tro 4th EditionCh.8 - Periodic Properties of the Elements문제 48b
8장, 문제 48b

Use the periodic table to determine each quantity.
b. the number of 3d electrons in Cr

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1
Identify the electron configuration of chromium (Cr) using the periodic table.
Recall that chromium is an exception to the typical electron configuration rules.
Write the electron configuration for Cr: \([\text{Ar}] 3d^5 4s^1\).
Determine the number of electrons in the 3d subshell from the electron configuration.
Conclude that the number of 3d electrons in Cr is the number of electrons in the 3d subshell.

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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
3m
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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. For transition metals like chromium (Cr), the electron configuration is crucial for understanding how many electrons occupy specific subshells, such as the 3d subshell. Chromium has an atomic number of 24, and its electron configuration is [Ar] 3d5 4s1, indicating it has five electrons in the 3d subshell.
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01:33
Electron Configuration Example

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. They typically have partially filled d orbitals, which play a significant role in their chemical properties and bonding behavior. Understanding the unique characteristics of transition metals is essential for determining electron counts in specific subshells.
추천 영상:
가이드 코스
03:12
Transition Metals

Periodic Table Trends

The periodic table organizes elements based on their atomic number and electron configurations, revealing trends in properties such as electronegativity, ionization energy, and atomic size. These trends help predict the behavior of elements, including how many electrons occupy certain orbitals. For chromium, recognizing its position in the periodic table aids in understanding its electron configuration and the number of 3d electrons.
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00:38
Periodic Trends
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