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Properties of Transition Metals02:58

Properties of Transition Metals

29.4K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
29.4K
Periodic Classification of the Elements04:00

Periodic Classification of the Elements

58.3K
The periodic table arranges atoms based on increasing atomic number so that elements with the same chemical properties recur periodically. When their electron configurations are added to the table, a periodic recurrence of similar electron configurations in the outer shells of these elements is observed. Because they are in the outer shells of an atom, valence electrons play the most important role in chemical reactions. The outer electrons have the highest energy of the electrons in an atom...
58.3K
The Periodic Table03:25

The Periodic Table

106.3K
As early chemists discovered more elements, they realized that various elements could be grouped by their similar chemical behaviors. One such grouping includes lithium (Li), sodium (Na), and potassium (K). All of these elements are shiny, conduct heat and electricity well, and have similar chemical properties. A second grouping includes calcium (Ca), strontium (Sr), and barium (Ba), which also are shiny, good conductors of heat and electricity, and have chemical properties in common. However,...
106.3K
Ions and Ionic Charges03:27

Ions and Ionic Charges

78.2K
In ordinary chemical reactions, the nucleus — which contains the protons and neutrons of each atom and thus identifies the element — remains unchanged. Electrons, however, can be added to atoms by transfer from other atoms, lost by transfer to other atoms, or shared with other atoms. The transfer and sharing of electrons among atoms govern the chemistry of the elements. During the formation of some compounds, atoms gain or lose electrons to form electrically charged particles called...
78.2K
Noble Gases02:54

Noble Gases

22.2K

The elements in group 18 are noble gases (helium, neon, argon, krypton, xenon, and radon). They earned the name “noble” because they were assumed to be nonreactive since they have filled valence shells. In 1962, Dr. Neil Bartlett at the University of British Columbia proved this assumption to be false.
22.2K
Electron Configuration of Multielectron Atoms03:26

Electron Configuration of Multielectron Atoms

64.0K
The alkali metal sodium (atomic number 11) has one more electron than the neon atom. This electron must go into the lowest-energy subshell available, the 3s orbital, giving a 1s22s22p63s1 configuration. The electrons occupying the outermost shell orbital(s) (highest value of n) are called valence electrons, and those occupying the inner shell orbitals are called core electrons. Since the core electron shells correspond to noble gas electron configurations, we can abbreviate electron...
64.0K

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Updated: Jan 9, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

18.9K

トランジション・メタルとしてのメイン・グループ要素

Philip P Power1

  • 1Department of Chemistry, University of California, Davis, California 95616, USA.

Nature
|January 16, 2010
PubMed
まとめ
この要約は機械生成です。

最近の進歩は,より重いメイングループ元素の化合物が,より軽い元素と大きく異なるユニークな電子特性を示すことを明らかにしています. 彼らの化学は,ますます移行金属に平行して,触媒の潜在性を示しています.

さらに関連する動画

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
09:45

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene

Published on: March 20, 2017

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Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
10:42

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV

Published on: December 29, 2016

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関連する実験動画

Last Updated: Jan 9, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

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Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
09:45

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene

Published on: March 20, 2017

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Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
10:42

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV

Published on: December 29, 2016

11.1K

科学分野:

  • 無機化学 無機化学とは
  • メイングループ元素化学 メイングループ元素化学

背景:

  • 20世紀後半と21世紀初頭には,より重量のあるメイングループ元素の化学において,重要なブレークスルーが見られました.
  • 新しく合成された化合物は,より軽い元素と比較して明確な電子特性を明らかにし,以前の理解に挑戦しています.

研究 の 目的:

  • 重いメイングループ元素化合物のユニークな構造と結合特性を探求する.
  • これらの化合物の反応性と移行金属複合体間の類似性を調査する.

主な方法:

  • 新しくより重いメイングループ元素化合物の合成.
  • 電子特性と構造的特徴の特徴付け.
  • 小分子 (例えば,H2−,NH3−,C2−,H4−,CO) の反応性に関する研究.

主要な成果:

  • 主なグループ要素の重量と軽量との間の電子特性における根本的な違いを強調した.
  • 重いメイングループ元素の化学反応が,移行金属複合体の化学反応にますます似ていることを実証した.
  • 軽度な条件下での小分子による新しい化合物の観察反応.

結論:

  • この研究は,より重いメイングループ要素に対する新しい構造と結合の洞察を提供します.
  • 重いメイングループ元素の化学は,移行金属の化学と有意な類似性を共有しています.
  • これらの化合物は,その反応性により,触媒応用の可能性を示しています.