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Bonding in Metals

Bonding in Metals

Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”.

Metallic Solids

Metallic Solids

Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....

Alkali Metals

Alkali Metals

Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals

Metal-Ligand Bonds

Metal-Ligand Bonds

The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...

Properties of Transition Metals

Properties of Transition Metals

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.

Theory of Metallic Conduction

Theory of Metallic Conduction

The conduction of free electrons inside a conductor is best described by quantum mechanics. However, a classical model makes predictions close to the results of quantum mechanics. It is called the theory of metallic conduction.
In this theory, Newton's second law of motion is used to determine the acceleration of an electron in the presence of an applied electric field. Then, its velocity is expressed via this acceleration.
An electron moves through the crystal, containing positive ions,...

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Related Experiment Video

Updated: Feb 16, 2026

Quantification of Metal Leaching in Immobilized Metal Affinity Chromatography

Quantification of Metal Leaching in Immobilized Metal Affinity Chromatography

Published on: January 17, 2020

Metals and Methanotrophy.

Jeremy D Semrau¹, Alan A DiSpirito², Wenyu Gu³

¹Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, Michigan, USA jsemrau@umich.edu.

Applied and Environmental Microbiology

|January 7, 2018

Summary

This summary is machine-generated.

Methanotrophs, microbes crucial for the carbon cycle, possess unique "metal switches" for gene expression. Recent studies reveal novel mechanisms for mercury detoxification and demethylation in these organisms.

Keywords:

copper mercury methanobactin methanotrophy rare-earth elements

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Metal-Limited Growth of Neisseria gonorrhoeae for Characterization of Metal-Responsive Genes and Metal Acquisition from Host Ligands

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Published on: March 4, 2020

Area of Science:

Microbiology
Environmental Science
Biogeochemistry

Background:

Aerobic methanotrophs are vital for the global carbon cycle, metabolizing methane.
These microbes display sensitivity to copper and rare-earth elements, influencing key metabolic pathways.
Recent research indicates methanotrophs can process inorganic mercury and methylmercury via unknown mechanisms.

Purpose of the Study:

To review recent findings on methanotroph-metal interactions.
To focus on the regulatory "metal switches" controlling gene expression in methanotrophs.
To explore novel mechanisms of mercury detoxification and sequestration by methanotrophs.

Main Methods:

Literature review of recent studies on methanotrophic interactions with metals.
Analysis of gene regulation mechanisms controlled by copper and rare-earth elements.
Investigation into the biochemical pathways for methylmercury demethylation.

Main Results:

Methanotrophs utilize "copper switches" and "rare-earth element switches" to regulate methane oxidation genes.
Some methanotrophs can detoxify inorganic mercury and demethylate methylmercury.
Novel mechanisms, distinct from canonical pathways, are involved in methylmercury demethylation.

Conclusions:

Methanotrophic metal-sensing and regulatory mechanisms are complex and diverse.
These microbes possess unique strategies for handling toxic metals like mercury.
Understanding these interactions is crucial for comprehending microbial roles in biogeochemical cycles and metal remediation.