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Note:
In the E isomer above one can't determine whether they are cis or trans. The isomer is in that form because according to priority assignments, the chloro and the ethyl substituents are on opposite sides of the molecul..
IUPAC Nomenclature for Elements with Z > 100
All elements beyond uranium (Z=92) are synthesized in the laboratories and are known as 'trans uranium elements'. The elements, beyond fermium (Z=100) are known as 'trans fermium elements'. These elements have atomic numbers 101 onwards. Elements like fermium (Z=100), mendelevium (Z=101), nobelium ..
Numbering the Carbon Atoms in the Ring
The numbering of carbon atoms in the ring (or nucleus) is done as follows. When there is only one substituent on the ring, there is only one compound possible. Thus, numbering of the carbon atoms of the nucleus does not arises. If there are two or more substituents, then numbering is in the alp..
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