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Openclipart, also called Open Clip Art Library, is an online media repository of free-content vector clip art.The project hosts over 160,000 free graphics and has billed itself as "the largest community of artists making the best free original clipart for you to use for absolutely any reason".
Cubical_atom_2.png: G.N. Lewis derivative work: Blleininger ( talk ) This is a retouched picture , which means that it has been digitally altered from its original version.
Examples of computer clip art, from Openclipart. Clip art (also clipart, clip-art) is a type of graphic art. Pieces are pre-made images used to illustrate any medium. Today, clip art is used extensively and comes in many forms, both electronic and printed. However, most clip art today is created, distributed, and used in a digital form.
(At the time, croquet was the most popular sport in England, so the balls were plentiful.) "On the Combining Power of Atoms", Chemical News, 12 (1865, 176–9, 189, states that "Hofmann, at a lecture given at the Royal Institution in April 1865 made use of croquet balls of different colours to represent various kinds of atoms (e.g. carbon black ...
A few mixed halides and hydrohalides are known, but are mostly unstable; examples include NClF 2, NCl 2 F, NBrF 2, NF 2 H, NFH 2, NCl 2 H, and NClH 2. [ 61 ] Nitrogen trifluoride (NF 3 , first prepared in 1928) is a colourless and odourless gas that is thermodynamically stable, and most readily produced by the electrolysis of molten ammonium ...
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]
The superscript 1 for a singly occupied subshell is not compulsory; for example aluminium may be written as either [Ne] 3s 2 3p 1 or [Ne] 3s 2 3p. In atoms where a subshell is unoccupied despite higher subshells being occupied (as is the case in some ions, as well as certain neutral atoms shown to deviate from the Madelung rule ), the empty ...
The Hoyle state also is a short-lived resonance with a half-life of 2.4 × 10 −16 s; it primarily decays back into its three constituent alpha particles, though 0.0413% of decays (or 1 in 2421.3) occur by internal conversion into the ground state of 12 C. [5]