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2. Ionic bonding - Wikipedia

   en.wikipedia.org/wiki/Ionic_bonding

   For example, Na–Cl and Mg–O interactions have a few percent covalency, while Si–O bonds are usually ~50% ionic and ~50% covalent. Pauling estimated that an electronegativity difference of 1.7 (on the Pauling scale ) corresponds to 50% ionic character, so that a difference greater than 1.7 corresponds to a bond which is predominantly ionic.

3. Formula unit - Wikipedia

   en.wikipedia.org/wiki/Formula_unit

   In chemistry, a formula unit is the smallest unit of a non-molecular substance, such as an ionic compound, covalent network solid, or metal. [1] [2] It can also refer to the chemical formula for that unit. Those structures do not consist of discrete molecules, and so for them, the term formula unit is used.

4. Ion - Wikipedia

   en.wikipedia.org/wiki/Ion

   When writing the chemical formula for an ion, its net charge is written in superscript immediately after the chemical structure for the molecule/atom. The net charge is written with the magnitude before the sign; that is, a doubly charged cation is indicated as 2+ instead of +2 .

5. Ionic crystal - Wikipedia

   en.wikipedia.org/wiki/Ionic_crystal

   In chemistry, an ionic crystal is a crystalline form of an ionic compound. They are solids consisting of ions bound together by their electrostatic attraction into a regular lattice . Examples of such crystals are the alkali halides , including potassium fluoride (KF), potassium chloride (KCl), potassium bromide (KBr), potassium iodide (KI ...

6. Pauling's rules - Wikipedia

   en.wikipedia.org/wiki/Pauling's_rules

   For typical ionic solids, the cations are smaller than the anions, and each cation is surrounded by coordinated anions which form a polyhedron.The sum of the ionic radii determines the cation-anion distance, while the cation-anion radius ratio + / (or /) determines the coordination number (C.N.) of the cation, as well as the shape of the coordinated polyhedron of anions.

7. Record dengue outbreak in Americas kills 7,700 this year ...

   www.aol.com/record-dengue-outbreak-americas...

   Reported cases of dengue in the Americas nearly tripled to a record high of over 12.6 million this year, including 21,000 severe cases and over 7,700 deaths, the Pan American Health Organization ...

8. Angelina Jolie Gets Asked 'the Most Insane Question.' Here's ...

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   Angelina Jolie balked at a question regarding whether there should be a biopic about her life.. When Jolie, 49, and her Maria director Pablo Larraín spoke with the U.K.'s The Times to promote ...

9. Utah AD Mark Harlan rips officials following loss to BYU ...

   www.aol.com/sports/utah-ad-mark-harlan-rips...

   Utah joined the Big 12 as part of a mass exodus from the Pac-12 and the 2024 season is its first season as a member. Following his statement, Harlan did not take any questions from the media and ...