However, if you were to look at a grain of salt, made up purely of NaCl, you wouldn’t consider it a molecule, as it is in fact a huge lattice network of individual sodium chloride compound particles, without a clear number of atomic nuclei. The same thing is true if you look at a...
Glucose and chlorophyll (b) Sunlight and oxygen (c) Chlorophyll and sunlight (d) Glucose and oxygen What is the unit cell for each closest packing arrangement? What is the difference between a phosphate diester and an easter of a diphosphate? What is the difference in the arrangement ...
The lattice energy of a compound at O deg K can be obtained from the heat of sublimation at O deg K, the zero-point energies due to the various intermolecular vibrations, and the difference between the crystal and the gas in the intramolecular zero-point energies. The difference in the lat...
What is the difference or the similarity between a unit cell and an (ionic) lattice? Does the epithelial tissue secrete enzymes and hormones? For the anode and cathode in electrolysis, will a different metal be used each time with different electrolytic solutions?
where 2θ is the scattering angle and λ the wavelength. In order to calculate an intensity, which can be compared to experimental values, it is necessary first to calculate the scattering for one ‘assembly’, which may be chosen for convenience (e.g. one molecule, one crystallite or even...
Optical properties of anthracene molecules in phenanthrene crystals with anthracene concentration of 0.03% to 8.4% were investigated and compared with those in fluorene crystals. In contrast to fluorene system where two kinds of dimers, one of which is accompanied by lattice relaxation, are observed,...
The method of partial oscillators and the mean statistical molecule of liquid water To describe the distortion perturbations of the water molecules in solutions the quantum-mechanical method of partial oscillators has been developed. This method allows one to separate in a simple manner two types of...
Finally, the general trend of solubility of alkali halides, based on the proposed model (Eq. 3 ) could be explained in terms of the trade-off between electrostatic interactions (solid lattice side) and the entropic effects (water side). 展开 关键词: Inter-ionic volume Polarity Aqueous ...
to become stable except the Nobel gases. According to their electron donating or withdrawing abilities, they can form covalent bonds or ionic bonds. Sometimes, there are very weak attractions between atoms. Particles and molecules have similar behavior and properties because molecule is also a ...
Lattice Lattice is a mathematical phenomenon. In chemistry, we can see different types of ionic and covalent lattices. It can be defined as a solid, which has a three- dimensional ordered arrangement of basic units. The basic unit can be an atom, molecule or an ion. Lattices are crystalline...