Diatomic 1D lattice Now we consider a one-dimensional lattice with two non-equivalent atoms in a unit cell. It appears that the diatomic lattice exhibit important features different from the monoatomic case. Fig.3 shows a diatomic lattice with the unit cell composed of two atoms of masses M1 and M2 with the distance between two neighboring atoms a. A molecule made up of two atoms is called a diatomic molecule. Diatomic molecule can be composed of two of the same atoms, called a diatomic element. Hydrogen gas, H2, is an example of a diatomic. In molecule Diatomic molecules contain two atoms that are chemically bonded. If the two atoms are identical, as in, for example, the oxygen molecule (O 2), they compose a homonuclear diatomic molecule, while if the atoms are different, as in the carbon monoxide molecule (CO), they make up.
Learning Objective
- Recognize the properties of homonuclear diatomic molecules.
Key Points
- Diatomic molecules are always linear.
- Diatomic molecules have quantized energy levels for rotation and vibration.
- The halogen series contains many homonuclear diatomic molecules.
- Hydrogen, nitrogen, and oxygen are stable homonuclear diatomic molecules.
Terms
- diatomicconsisting of two atoms
- homonuclearhaving atoms of only one element, especially elements of only a single isotope
Diatomic molecules are composed of only two atoms, of either the same or different chemical elements. Common diatomic molecules include hydrogen (H2), nitrogen (N2), oxygen (O2), and carbon monoxide (CO). Seven elements exist as homonuclear diatomic molecules at room temperature: H2, N2, O2, F2, Cl2, Br2, and I2. The bond in a homonuclear diatomic molecule is non-polar due to the electronegativity difference of zero.
Geometry
All diatomic molecules are linear, which is the simplest spatial arrangement of atoms.
Energy Levels
It is convenient and common to represent a diatomic molecule as two point masses (the two atoms) connected by a massless spring. The energies involved in the molecule's various motions can then be broken down into three categories:
- Translational energies (the molecule moving from point A to point B)
- Rotational energies (the molecule spinning about its axis)
- Vibrational energies (the molecules vibrating in a variety of ways)
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
http://www.boundless.com/
Boundless Learning
CC BY-SA 3.0.
List Of Diatomic Atoms
http://en.wiktionary.org/wiki/diatomic
Wiktionary
CC BY-SA 3.0.
http://en.wiktionary.org/wiki/homonuclear
Wiktionary
CC BY-SA 3.0.
Terms
- diatomicconsisting of two atoms
- homonuclearhaving atoms of only one element, especially elements of only a single isotope
Diatomic molecules are composed of only two atoms, of either the same or different chemical elements. Common diatomic molecules include hydrogen (H2), nitrogen (N2), oxygen (O2), and carbon monoxide (CO). Seven elements exist as homonuclear diatomic molecules at room temperature: H2, N2, O2, F2, Cl2, Br2, and I2. The bond in a homonuclear diatomic molecule is non-polar due to the electronegativity difference of zero.
Geometry
All diatomic molecules are linear, which is the simplest spatial arrangement of atoms.
Energy Levels
It is convenient and common to represent a diatomic molecule as two point masses (the two atoms) connected by a massless spring. The energies involved in the molecule's various motions can then be broken down into three categories:
- Translational energies (the molecule moving from point A to point B)
- Rotational energies (the molecule spinning about its axis)
- Vibrational energies (the molecules vibrating in a variety of ways)
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
http://www.boundless.com/
Boundless Learning
CC BY-SA 3.0.
List Of Diatomic Atoms
http://en.wiktionary.org/wiki/diatomic
Wiktionary
CC BY-SA 3.0.
http://en.wiktionary.org/wiki/homonuclear
Wiktionary
CC BY-SA 3.0.
Diatomic Atoms Boiling Point
http://en.wikipedia.org/wiki/Diatomic_molecule
Wikipedia
CC BY-SA 3.0.
