hydrogen atom

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Noun1.hydrogen atom - an atom of hydrogenhydrogen atom - an atom of hydrogen      
hydrogen ion - a positively charged atom of hydrogen; that is to say, a normal hydrogen atomic nucleus
atom - (physics and chemistry) the smallest component of an element having the chemical properties of the element
acid hydrogen, acidic hydrogen - a hydrogen atom in an acid that forms a positive ion when the acid dissociates
deuterium, heavy hydrogen - an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)
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where G is the gravitational constant, c is the velocity of light, M is the Earth mass, R is a distance between a center of the Earth and a center of mass of a hydrogen atom (i.e., proton).
The solid plasticizer comprises at least two different benzotriazole derivatives selected from compounds represented by following formula: R1 is one of a hydrogen atom, a halogen atom and an alkyl group; m is an integer of one to four; and X is one of a hydrogen atom, an alkyl group, an aryl group, an aralkyl group and a group represented by following formula: R2 is one of a hydrogen atom, a halogen atom, an alkyl group and hydroxyl group and n is an integer of one to five.
Summary: Certain embodiments of the present invention provide a tire component comprising a vulcanized rubber, and from about 3 to about 85 parts by weight, per 100 parts by weight rubber, of a filler dispersed within said vulcanized rubber, where the vulcanized rubber includes the vulcanized residue of a thermoplastic-elastomeric block copolymer defined by the formula [alpha]-[pi]-[theta]-[omega] where [alpha] is a hydrogen atom or a functional group, [pi] includes an elastomeric block, [theta] includes a thermoplastic block and [omega] includes a hydrogen atom or a functional group.
There are also fatty acids that do not have the maximum number of hydrogen atoms. Instead, two carbon atoms are connected by a double bond without a hydrogen atom in between.
The company said the C60 molecule is the "roundest and most symmetrical large molecule known to man," and is able to absorb "large numbers of hydrogen atoms -- almost one hydrogen atom for each carbon atom."
The two circles in the upper-left illustrate the universal time/length 'yardstick' of a hydrogen atom (don't ask).
The hydrogen atom is the most basic atom from the point of view of atomic structure theory.
Polypropylene is formed of linked carbons, the first linked to two hydrogen atoms, the second to a hydrogen atom and a methyl group (C[H.sub.3]).
Initial letters were used: H for a hydrogen atom, C for a carbon atom, O for an oxygen atom, and so on.
Another option available is to replace the CFC with HCFC which contain a hydrogen atom, making it less harmful and legal until 2030.
The antistatic coating film features a polymer with a polymerized unit represented by the following formula (1): wherein R1 and R2 each independently represent a hydrogen atom or a methyl group, R3 represents an alkylene group having 2 to 10 carbon atoms, R4 and R5 each independently represent an alkyl group having 1 to 5 carbon atoms, R6 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a hydroxyalkyl group having 2 to 10 carbon atoms, and Y-represents a halogen ion, a halogenated alkyl ion, a nitrate ion, a sulfate ion, an alkyl sulfate ion, a sulfonate ion or an alkyl sulfonate ion.
In the first step, an oxygen radical--a molecule with an unpaired electron on an oxygen atom--removes a hydrogen atom from a lipid.