2006-06-20 03:41:41 · 7 answers · asked by crickwiz 2 in Science & Mathematics ➔ Chemistry
Two types of molecular hydrogen (ortho and para) are known. These differ in the magnetic interactions of the protons due to the spinning motions of the protons.
In ortho-hydrogen, the spins of both protons are aligned in the same direction—that is, they are parallel. In para-hydrogen, the spins are aligned in opposite directions and are therefore antiparallel.
The relationship of spin alignments determines the magnetic properties of the atoms. Normally, transformations of one type into the other (i.e., conversions between ortho and para molecules) do not occur and ortho-hydrogen and para-hydrogen can be regarded as two distinct modifications of hydrogen. The two forms may, however, interconvert under certain conditions.
para and ortho positions are positions on benzene ring, but not really relevant to para and ortho hydrogens ^^
2006-06-20 05:26:09 · answer #1 · answered by nickyTheKnight 3 · 0⤊ 0⤋
these are positions on a benzene ring
relative to position 1, and numbering in a clockwise manner, 2 and 6 are ortho, 3 and 5 are meta, and 4 is para.
2006-06-20 10:47:17 · answer #2 · answered by scott_d_webb 3 · 0⤊ 0⤋
ortho and para is relative to the plains on a benzene ring. because the ring has double bonds in it, and the double bonds constantly shifts (hence we draw a circle often times in the ring), it flip flops causing the hydrogens to flip with them as well. para is when the hydrogen is horizontal to the ring, and ortho when its perpendicular to the ring
2006-06-20 10:56:41 · answer #3 · answered by kasumi_is 1 · 0⤊ 0⤋
it's positions on an aromatic ring normally benzene. if they are right next to each other (1,2) thats ortho, if there is a space between (1,3) that's meta, if they are across from each other (1,4) that's para. This nomenclature is standard for all substituents not just H.
2006-06-20 13:05:55 · answer #4 · answered by shiara_blade 6 · 0⤊ 0⤋
Different types of hydrogen, almost allotropic in nature, but not quite - as para hydrogen is not in a ground state.
2006-06-20 10:59:28 · answer #5 · answered by Stephan B 5 · 0⤊ 0⤋
Two types of molecular hydrogen.Differs in magnetic interactions and spin.In atm found in 3:1.Consult any chem book for details.
2006-06-20 11:09:19 · answer #6 · answered by Anonymous · 0⤊ 0⤋
these are the two spin isomers of hydrogen.they possess parallell and anti parallel spin repectively.at 0 kelvin the ortho:para concentration is 3:1 .
2006-06-20 13:07:50 · answer #7 · answered by vikrant_evil 1 · 0⤊ 0⤋