what are the necessary conditions for geometrical isomerism?
154507
Conditions for geometrical isomerism: There are two necessary conditions for a compound to possess geometrical isomerism: (i) It must contain a carbon-carbon double bond in the molecule. (ii) Two unlike atoms or groups must be linked to each doubly bonded carbon atoms.
867709
In an isosceles right triangle, the equal sides make the right angle. They have the ratio of equality, 1 : 1. To find the ratio number of the hypotenuse h, we have, according to the Pythagorean theorem, h2 = 12 + 12 = 2.
46940
['isolation.', 'isotropic.', 'isometric.', 'isopropyl.', 'isosceles.', 'isoniazid.', 'isobutane.', 'isoenzyme.']
1308928
Optical Isomers. Stereoisomers that are not geometric isomers are known as optical isomers. Optical isomers differ in the placement of substituted groups around one or more atoms of the molecule. They were given their name because of their interactions with plane-polarized light.
629768
Cis–trans isomerism, also known as geometric isomerism or configurational isomerism, is a term used in organic chemistry. ... Cis-trans isomers are stereoisomers, that is, pairs of molecules which have the same formula but whose functional groups are rotated into a different orientation in three-dimensional space.
46043
Meso compounds are achiral because they have a plane of symmetry and this will lead to a mirror image which is superimposable to the original molecule.
60754
['It should have a single cyclic cloud of delocalised n-electrons above and below the plane of the molecule.', 'It should be planar. ... ', 'It should contain Huckel number of electrons, i.e., (4n + 2) n-electrons where n = 0, 1, 2, 3 etc.']
175377
Answer and Explanation: No, not all right triangles are isosceles. Although it is possible to have a right triangle that is an isosceles triangle, not all right triangles...
359879
The exact relationship is m = 2n where m is the number of possible isomers and n is the number of chiral centers. Thus, for molecules with two chiral centers there are maximum of four possible stereoisomers. (Molecules with more than two chiral centers will not be considered here.)
358369
Every amino acid (except glycine) can occur in two isomeric forms, because of the possibility of forming two different enantiomers (stereoisomers) around the central carbon atom. By convention, these are called L- and D- forms, analogous to left-handed and right-handed configurations.
143669
According to the collision theory, the following criteria must be met in order for a chemical reaction to occur: Molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. Molecules must collide with the proper orientation.
1128252
['they possess different physical properties.', 'they have different chemical property.', 'they show similar properties when they contain same functional group.', 'They have same molecular formula but different structural formula.', '2 isomers have different Boiling point.', 'They have same atomic weight and same number of atoms.']
412035
Alkynes contain triple bond around which the rotation is hindered but the molecule is linear. Therefore, the question of fixed arrangement does not arise. Hence alkanes and alkynes do not show geometrical isomerism.
755429
cyclic compounds. Geometric isomers fall under the category of stereoisomers. Stereoisomers are compounds that have the same condensed structural formula, but differ due to the arrangment of their atoms in space. ... Geometric isomers are only possible when each carbon of a double bond is bonded to two different groups.
417335
What it means here is that when we have an internal plane that splits the compound into two symmetrical sides, the stereochemistry of both left and right side should be opposite to each other, and therefore, result in optically inactive. Cyclic compounds may also be meso.
934973
Occur when two different groups are attached to the carbon atoms on each side of the DOUBLE BOND. True or False: Cis-Trans Isomers have the same chemical and physical properties. False. They have different chemical and physical properties.
21785
['The sum of angles in any triangle is 180°. ... ', 'An equilateral triangle has three equal sides and angles. ... ', 'An isosceles triangle can be drawn in many different ways. ... ', 'A right-angled triangle has one 90° angle. ... ', 'A scalene triangle has three different angles and none of its sides are equal in length.']