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2. Magnesium - Wikipedia

   en.wikipedia.org/wiki/Magnesium

   Chemical element with atomic number 12 (Mg) Magnesium, 12 Mg Magnesium Pronunciation / m æ ɡ ˈ n iː z i ə m / (mag- NEE -zee-əm) Appearance shiny grey solid Standard atomic weight A r °(Mg) [24.304, 24.307] 24.305 ± 0.002 (abridged) Magnesium in the periodic table Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus ...

3. Magnesium compounds - Wikipedia

   en.wikipedia.org/wiki/Magnesium_compounds

   Magnesium compounds are compounds formed by the element magnesium (Mg). These compounds are important to industry and biology, including magnesium carbonate , magnesium chloride , magnesium citrate , magnesium hydroxide (milk of magnesia), magnesium oxide , magnesium sulfate , and magnesium sulfate heptahydrate ( Epsom salts ).

4. Group 12 element - Wikipedia

   en.wikipedia.org/wiki/Group_12_element

   However, beryllium and magnesium are small atoms, unlike the heavier alkaline earth metals and like the group 12 elements (which have a greater nuclear charge but the same number of valence electrons), and the periodic trends down group 2 from beryllium to radium (similar to that of the alkali metals) are not as smooth when going down from ...

5. List of chemical elements - Wikipedia

   en.wikipedia.org/wiki/List_of_chemical_elements

   A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...

6. 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. [1] In older contexts, atomicity is sometimes equivalent to valency. Some authors also use the term to refer to the maximum number of valencies observed ...

7. Glossary of chemical formulae - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_chemical_formulae

   Chemical formula Synonyms CAS number Ac 2 O 3: actinium(III) oxide: 12002-61-8 AgBF 4: Silver tetrafluoroborate: 14104-20-2 AgBr: silver bromide: 7785-23-1 AgBrO: silver hypobromite