Chemistry Mnemonics-Organic Chemistry

Organic chemistry

Nomenclature

Carboxylic acids

Common names of homogeneous aliphatic carboxylic acids,

Formic, Acetic, Propionic, Butyric, Valeric, Caproic

• Frogs Are Polite, Being Very Courteous

Dicarboxylic acids

The sequence of dicarboxylic acids can be remembered with following mnemonics.

Oxalic, Malonic, Succinic, Glutaric, Adipic, Pimelic, Suberic, Azelaic, Sebacic

• Oh My Such, Good Apples^[22]
• Oh My Stars, Green Apples
• Oh My, Such Good Apple Pi.e., Sweet As Sugar

Aromatic compounds

m-directing groups

Quaternary amino	Ester	Sulfonic acid	Nitro	Carbonyl	Carboxyl	Cyano
(-NR3+)	(-COOR)	(-SO3H)	(-NO2)	(-CHO)	(-COOH)	(-CN)

• Queen Elizabeth Second’s Navy Commands, Controls, Communicates^[24]

o,p-directing groups

Alkyl	Halogen	Alkoxyl	Amino			Hydroxyl	Amide	Phenyl
(R)	(X)	(OR)	(-NH2	-NHR	-NR2)	(OH)	(NHCOR	(C6H5)

• AHA AHA P

Note: -NH2,-NHR and NR2 are para directing groups but not -NR3+

Atomic orbital

Sequence of orbitals

Further information: Spectroscopic_notation#Mnemonic

s p d f g h i k

• Sober Physicists Don’t Find Giraffes Hiding In Kitchens

Note: After the k shell, they follow alphabetical order (skipping p as it came earlier)^[1]

Aufbau principle

1s2 2s2 2p6 3s2 3p6 4s2 3d10 …

The order of sequence of atomic orbitals (according to Madelung rule or Klechkowski rule) can be remembered by using the following visual mnemonics

Order in which orbitals are arranged by increasing energy according to the Madelung rule. Each diagonal red arrow corresponds to a different value of n + l.

Another version of the visual mnemonic for the Madelung rule

Mohs scale of mineral hardness

To remember the Mohs hardness of minerals

Talc(1) < Gypsum(2) < Calcite(3) < Fluorite(4) < Apatite(5) < Orthoclase(6) < Quartz(7) < Topaz(8) < Corundum(9) < Diamond(10)

Tall Gene Calls Florence At Our Quarters To Correct Dumbness.^[1]