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Ordinal indicators are sometimes written as superscripts (1 st, 2 nd, 3 rd, 4 th, rather than 1st, 2nd, 3rd, 4th), although many English-language style guides recommend against this use. [4] Romance languages use a similar convention, such as 1 er or 2 e in French, or 4ª and 4º in Galician and Italian, or 4.ª and 4.º in Portuguese and Spanish.
Thus "H₂O" (using a subscript 2 character) is supposed to be identical to "H 2 O" (with subscript markup). In reality, many fonts that include these characters ignore the Unicode definition, and instead design the digits for mathematical numerator and denominator glyphs, [ 3 ] [ 4 ] which are aligned with the cap line and the baseline ...
The standard state of a material (pure substance, mixture or solution) is a reference point used to calculate its properties under different conditions.A degree sign (°) or a superscript Plimsoll symbol (⦵) is used to designate a thermodynamic quantity in the standard state, such as change in enthalpy (ΔH°), change in entropy (ΔS°), or change in Gibbs free energy (ΔG°).
Micro (Greek letter μ, mu, non-italic) is a unit prefix in the metric system denoting a factor of 10 −6 (one millionth). [1] It comes from the Greek word μικρός (mikrós), meaning "small".
An infobox for chemicals. It has a large number of options to add relevant data and images. The Chembox has a modular design. After the general information like the chemical name and images, it can be built from multiple sections, each covering a group of information (like "pharmacology"). Depending on the compound, sections can be added or left out, and within a section parameters can be ...
O 2 or dioxygen, the common allotrope of the chemical element oxygen; O 2−, the ion oxide; O − 2, the ion superoxide; O + 2, the ion dioxygenyl; O 2+, doubly ionized oxygen; O(2), the 2-dimensional orthogonal group in group theory; O2, an EEG electrode site according to the 10–20 system; SGI O2, a Unix workstation computer
[1] [2] It is also used for boundary of a set, the boundary operator in a chain complex, and the conjugate of the Dolbeault operator on smooth differential forms over a complex manifold. It should be distinguished from other similar-looking symbols such as lowercase Greek letter delta (δ) or the lowercase Latin letter eth (ð).
Open {} and copy the relevant (simple, medium, full) box desired, and paste into a text editor; Open the relevant reference (e.g. MSDS, Merck Index, CRC Handbook, etc.) and input the data into the template; Copy the filled-out template into the relevant Wikipedia article.