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2. VSEPR theory - Wikipedia

   en.wikipedia.org/wiki/VSEPR_theory

   VSEPR theory is used to predict the arrangement of electron pairs around central atoms in molecules, especially simple and symmetric molecules. A central atom is defined in this theory as an atom which is bonded to two or more other atoms, while a terminal atom is bonded to only one other atom.

3. Bent molecular geometry - Wikipedia

   en.wikipedia.org/wiki/Bent_molecular_geometry

   This geometry is almost always consistent with VSEPR theory, which usually explains non-collinearity of atoms with a presence of lone pairs. There are several variants of bending, where the most common is AX 2 E 2 where two covalent bonds and two lone pairs of the central atom (A) form a complete 8-electron shell .

4. Trigonal pyramidal molecular geometry - Wikipedia

   en.wikipedia.org/wiki/Trigonal_pyramidal...

   In chemistry, a trigonal pyramid is a molecular geometry with one atom at the apex and three atoms at the corners of a trigonal base, resembling a tetrahedron (not to be confused with the tetrahedral geometry).

5. Bent's rule - Wikipedia

   en.wikipedia.org/wiki/Bent's_rule

   According to VSEPR theory, diethyl ether, methanol, water and oxygen difluoride should all have a bond angle of 109.5 o. [12] Using VSEPR theory, all these molecules should have the same bond angle because they have the same "bent" shape. [12] Yet, clearly the bond angles between all these molecules deviate from their ideal geometries in ...

6. Category:Free raster graphics editors - Wikipedia

   en.wikipedia.org/wiki/Category:Free_raster...

   Free and open-source software portal Wikimedia Commons has media related to Free raster graphics editors . This is a category of articles relating to graphics software which can be freely used, copied, studied, modified, and redistributed by everyone that obtains a copy: " free software " or " open source software ".

7. Comparison of raster graphics editors - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_raster...

   Professional image editor and graphics creation tool Adobe Systems: February 19, 1990: CC 2021 / 22.4.1 May 19, 2021: $9.99 per month Proprietary: Adobe Photoshop Elements: Raster graphics editor for entry-level photographers, image editors and hobbyists 2021 October 8, 2020: $99 Proprietary: Adobe Photoshop Lightroom: Photo editor Adobe ...