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Notation
New post in Notation
What does the symbol ϕ mean in skeletal formulae?
August 1st, 2022
structural-formula
notation
aromatic-compounds
Is it wrong to write a coefficient of 1 in a chemical equation?
August 1st, 2022
nomenclature
notation
Significant figures used to imply stated error?
August 13th, 2022
notation
How do we represent a molecule in text form?
August 14th, 2022
notation
What does the M in μM-Sux stand for?
February 18th, 2020
notation
Kröger-Vink notation for defect reactions
August 15th, 2022
notation
What does the plus-minus sign with a value in parentheses mean?
August 1st, 2022
notation
What does the Pi stand for in the reaction for biological nitrogen fixation?
August 1st, 2022
chemical-biology
notation
Hyphenation of chemical names
August 1st, 2022
nomenclature
notation
What is the meaning of the "colon" notation in chemical formulas?
May 18th, 2020
notation
What is difference between T1g and T2g?
January 2nd, 2020
inorganic-chemistry
symmetry
notation
Can a double bond extend beyond the plane and if so, how would it be drawn?
August 1st, 2022
notation
bond
stereochemistry
What does the ‘−1’ superscript mean in units?
September 15th, 2020
units
notation
kJ per mole or kJ per 2 moles?
August 1st, 2022
physical-chemistry
thermodynamics
energy
notation
erratum
Can isotopes of a given element be represented by different symbols?
August 1st, 2022
isotope
notation
nomenclature
Should the 'a' in the acid dissociation constant (Ka or pKa) be capitalised?
September 11th, 2020
ph
notation
acid-base
equilibrium
Is 1 ppb equal to 1 μg/kg?
August 1st, 2022
units
concentration
notation
Why do we sometimes write reactants above the reaction arrow?
August 1st, 2022
notation
What are t2g and eg in CFT?
August 1st, 2022
coordination-compounds
molecular-orbital-theory
notation
symmetry
group-theory
What databases or repositories are there that have generalized SMILES for functional groups?
February 12th, 2022
notation
cheminformatics
databases
Is “amount of substance” the same thing as “number of moles”?
August 3rd, 2022
mole
notation
terminology
What is the difference between O & O2
November 3rd, 2020
notation
Arrows used in chemical reactions
August 13th, 2022
notation
What is the meaning of the "dot" notation in chemical formulas?
August 1st, 2022
notation
Typography of multi-letter variables
August 15th, 2022
notation
Letter codes in molecular term symbols
September 18th, 2020
quantum-chemistry
notation
For a benzene shown in a skeletal structure, what does a substituent to the center of the ring mean?
August 1st, 2022
notation
organic-chemistry
aromatic-compounds
What do curly brackets {} mean?
August 1st, 2022
concentration
notation
equilibrium
What is the role of the slash ("/") in chemical reactions?
August 5th, 2022
notation
Proper typography of "NOx"
October 4th, 2020
notation
molecules
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