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2. Hume-Rothery rules - Wikipedia

   en.wikipedia.org/wiki/Hume-Rothery_rules

   [5] [6] The solute and solvent should have similar electronegativity. [7] Valency factor: two elements should have the same valence. The greater the difference in valence between solute and solvent atoms, the lower the solubility.

3. Valence (chemistry) - Wikipedia

   en.wikipedia.org/wiki/Valence_(chemistry)

   Thus, each sulfur atom is hexavalent or has valence 6, but has oxidation state +5. In the dioxygen molecule O 2, each oxygen atom has 2 valence bonds and so is divalent (valence 2), but has oxidation state 0. In acetylene H−C≡C−H, each carbon atom has 4 valence bonds (1 single bond with hydrogen atom and a triple bond with the other ...

4. Atomicity (chemistry) - Wikipedia

   en.wikipedia.org/wiki/Atomicity_(chemistry)

   Atomicity is the total number of atoms present in a molecule of an element. For example, each molecule of oxygen (O 2) is composed of two oxygen atoms.Therefore, the atomicity of oxygen is 2.

5. Equivalent weight - Wikipedia

   en.wikipedia.org/wiki/Equivalent_weight

   In chemistry, equivalent weight (also known as gram equivalent [1] or equivalent mass) is the mass of one equivalent, that is the mass of a given substance which will combine with or displace a fixed quantity of another substance.

6. Silver sulfate - Wikipedia

   en.wikipedia.org/wiki/Silver_sulfate

   The synthesis of silver(II) sulfate (AgSO 4) with a divalent silver ion instead of a monovalent silver ion was first reported in 2010 [9] by adding sulfuric acid to silver(II) fluoride (HF escapes). It is a black solid that decomposes exothermically at 120 °C with evolution of oxygen and the formation of the pyrosulfate. AgF 2 + H 2 SO 4 → ...

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8. Ammonium heptamolybdate - Wikipedia

   en.wikipedia.org/wiki/Ammonium_heptamolybdate

   Ammonium heptamolybdate is the inorganic compound whose chemical formula is (NH 4) 6 Mo 7 O 24, normally encountered as the tetrahydrate.A dihydrate is also known. It is a colorless solid, often referred to as ammonium paramolybdate or simply as ammonium molybdate, although "ammonium molybdate" can also refer to ammonium orthomolybdate, (NH 4) 2 MoO 4, and several other compounds.

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   Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.