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The para form whose lowest level is J = 0 is more stable by 1.455 kJ/mol [6] [7] than the ortho form whose lowest level is J = 1. The ratio between numbers of ortho and para molecules is about 3:1 at standard temperature where many rotational energy levels are populated, favoring the ortho form as a result of thermal energy.
A graph of isotope stability, with some of the magic numbers. In nuclear physics, a magic number is a number of nucleons (either protons or neutrons, separately) such that they are arranged into complete shells within the atomic nucleus.
In the mathematical field of order theory, an element a of a partially ordered set with least element 0 is an atom if 0 < a and there is no x such that 0 < x < a. Equivalently, one may define an atom to be an element that is minimal among the non-zero elements, or alternatively an element that covers the least element 0 .
The atomic ratio is a measure of the ratio of atoms of one kind (i) to another kind (j). A closely related concept is the atomic percent (or at.%), which gives the percentage of one kind of atom relative to the total number of atoms. [1]
In the vortex theory of the atom, a chemical atom is modelled by such a vortex in the aether. Knots can be tied in the core of such a vortex, leading to the hypothesis that each chemical element corresponds to a different kind of knot. The simple toroidal vortex, represented by the circular "unknot" 0 1, was thought to represent hydrogen.
The estate was built as a country residence for Richard John Uniacke, Nova Scotia's Attorney-General during the War of 1812.Located along the "Post Road", the original road between Halifax and Windsor, the site was, according to Uniacke's s family, selected in 1776 while Uniacke being taken to Halifax in chains to face a treason trial for siding with the rebels in the Battle of Fort Cumberland.
Andrew Mitchell Uniacke (9 November 1808 – 26 July 1895) was a lawyer, banker and politician in Nova Scotia. He represented Halifax township in the Nova Scotia House of Assembly from 1843 to 1847. He was born in Halifax , the son of Richard John Uniacke (lawyer) and Eliza Newton.
Richard John Uniacke (June 6, 1789 – February 21, 1834) was a lawyer, judge and political figure in Nova Scotia. He represented Cape Breton County in the Nova Scotia House of Assembly from 1820 to 1830. He was born in Halifax, Nova Scotia, the son of Richard John Uniacke and Martha Maria Delesdernier who was the daughter of Moses Delesdernier.