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화학 결합 종류
Chemical bonding theories were pioneered by American chemist Gilbert N. Lewis. He developed a model called the Lewis model to explain the type…
루이스 기호와 옥텟 규칙
Chemical bonds are complex interactions between two or more atoms or ions, which reduce the potential energy of the molecule. Gilbert N. Lewis…
이온결합과 전자 이동
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its…
보른-하버 순환
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a…
격자에너지 경향: 이온 크기와 전하
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a…
공유결합과 루이스 구조
Compared to ionic bonds, which results from the transfer of electrons between metallic and nonmetallic atoms, covalent bonds result from the mutual…
전기음성도
Whether a bond is nonpolar or polar covalent is determined by a property of the bonding atoms called electronegativity.  Electronegativity…
결합 극성, 쌍극자 모멘트, 퍼센트 이온성
The absolute value of the difference in electronegativity (ΔEN) of two bonded atoms provides a rough measure of the polarity to be expected…
분자 화합물과 다원자 이온의 루이스 구조
To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined: Determine the…
공명
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N-O and N=O…
형식전하
In some cases, there are seemingly more than one valid Lewis structures for molecules and polyatomic ions. The concept of formal charges can be used…
옥텟 규칙의 예외
Many covalent molecules have central atoms that do not have eight electrons in their Lewis structures. These molecules fall into three…
결합에너지와 결합길이
Stable molecules exist because covalent bonds hold the atoms together. The strength of a covalent bond is measured by the energy required to break…
금속의 결합
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the…
Polyatomic 급진적인 양이온으로 강한 분야 단 열 이온화에 초고속 진동 일관성의 측정
We present a pump-probe method for preparing vibrational coherences in polyatomic radical cations and probing their ultrafast dynamics. By shifting…
실내 온도에서 탄소 나노 시트의 제조
Amphiphilic molecules equipped with a reactive, carbon-rich "oligoyne" segment consisting of conjugated carbon-carbon triple bonds self-assemble into…

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