Question

orientation definition ​

Answer 1

Heya

The action of orienting someone or something relative to the points of a compass or other specified positions.

Hope it helps u....

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Answer 2

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We have to remember that molecules are three dimensional, real objects, just as we are, and they tumble and move around as we do. The straight lines connecting the atoms--called covalent bonds--are unlikely to break, and if they do, it changes the identity and the name of the molecule.

Stereoisomers are isomeric molecules that have the same molecular formula and sequence of bonded atoms (constitution), but which differ only in the three-dimensional orientations of their atoms in space

Dextrorotatory and levorotatory are a set of two terms that designate the direction polarised light is rotated to by a specific compound

For example

“D-glucose” from “L-glucose” Or D-alanine from L-alanine

if the OH on the bottom chiral centre points to the right, it is referred to as D-

if the OH on the bottom chiral centre points to the left, it is referred to as L- .

covalent bonds being directional is that atoms bonded covalently prefer specific orientations in space relative to one another. As a result, molecules in which atoms are bonded covalently have definite shapes.

The reason for this directionality is that covalent bonds are formed by sharing electrons between atoms, or, in other words, as you said, by overlapping the atomic orbitals of participant atom. And usually only few patterns of overlap are possible, consequently, only few spatial arrangements of atom are possible

Ionic and covalent bonds are the two extremes of bonding. Polar covalent is the intermediate type of bonding between the two extremes. Some ionic bonds contain covalent characteristics and some covalent bonds are partially ionic. For example, most carbon-based compounds are covalently bonded but can also be partially ionic. Polarity is a measure of the separation of charge in a compound. A compound's polarity is dependent on the symmetry of the compound and on differences in electronegativity between atoms.

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