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Alpha particle mass is due to the two protons and two neutrons bonding. Thus, the Alpha ray nucleus is very similar to the Helium-4 nucleus. Represented by the Greek alphabet α. This article lets us know about alpha particle mass in detail, along with examples.
- Proton Mass
The proton mass is slightly less than the neutron mass. Mass...
- Proton Mass
Rutherford proposed three explanations: 1) an alpha particle is a hydrogen molecule (H 2) with a charge of 1 e; 2) an alpha particle is an atom of helium with a charge of 2 e; 3) an alpha particle is half a helium atom with a charge of 1 e.
If all the hydrogen is fully inonized, then the mass of one hydrogen atom (1 amu) would be shared by two particles (the H nucleus and the free electron), and the mean mass per particle would now be 1 amu per 2 particles, or = 0:5.
Alpha particles carry double the positive charge of the proton, i.e., equal to the charge on the Helium nucleus. The mass of an α-particle is four times the mass of a Hydrogen atom, i.e., equivalent to the mass of the Helium atom.
By expressing the mass defect in MeV/c2 (using 1 u = 931.5 MeV/c2), one gets a direct reading of the binding energy in MeV. For example with carbon-12, the mass defect of 0.098931 u converts to 92.15 MeV/c2. This corresponds to a binding energy of. = (92.15 MeV/c2)(c2) = 92.15 MeV.
Hydrogen-bonding forms in liquid water as the hydrogen atoms of one water molecule are attracted towards the oxygen atom of a neighboring water molecule; generally, a proton is shared by two lone electron pairs. In a water molecule (H 2 O), the oxygen nucleus with +8 charges attracts electrons better than the hydrogen nucleus with its +1 charge.
13 Νοε 2022 · Identify three special properties of water that make it unusual for a molecule of its size, and explain how these result from hydrogen bonding. Explain what is meant by hydrogen bonding and the molecular structural features that bring it about.
