What is the iupac name for the following compound?

a. 5-chloro-3-methylhexanone
b. 2-chloro-4-methyl-5-hexanone
c. 5-chloro-3-methyl-2-hexanone
d. 5-chloro-3,5-dimethyl-2-pentanone
e. 1-chloro-1,3-dimethyl-4-pentanone

c. 5-chloro-3-methyl-2-hexanone

Explanation:

The IUPAC nomenclature of alkanes are given as follows:

Select the longest possible carbon chain. For the number of carbon atom, we add prefix as 'meth' for 1, 'eth' for 2, 'prop' for 3, 'but' for 4, 'pent' for 5, 'hex' for 6, 'sept' for 7, 'oct' for 8, 'nona' for 9 and 'deca' for 10. A suffix '-ane' is added at the end of the name. If two of more similar alkyl groups are present, then the words 'di', 'tri' 'tetra' and so on are used to specify the number of times these alkyl groups appear in the chain.

For any substituent attached, the numbering is done according to the priority of the functional group which is:-

Carboxylic Acids  > Acid Anhydrides   >  Esters    > Acyl Halides   > Amides   > Nitriles   >  Aldehydes    > Ketones   > Alcohols   > Thiols   > Amines   > Ethers   >  Sulphides   > Alkenes   > Alkynes   > Alkyl Halides   > Nitro   > Alkanes

Thus,

Numbering is shown below. The long chain is 6 membered ring having substituents ketone at C-2, methyl group at C-3 and chloro bond at C-5

The name is:-

c. 5-chloro-3-methyl-2-hexanone

 

It dont even matter because at the end of thre day we gone life like it ius s

assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

explanation

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.