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2. Reactivity series - Wikipedia

   en.wikipedia.org/wiki/Reactivity_series

   In chemistry, a reactivity series (or reactivity series of elements) is an empirical, calculated, and structurally analytical progression [1] of a series of metals, arranged by their "reactivity" from highest to lowest.

3. Reactivity (chemistry) - Wikipedia

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

   In chemistry, reactivity is the impulse for which a chemical substance undergoes a chemical reaction, either by itself or with other materials, with an overall release of energy. Reactivity refers to: the chemical reactions of a single substance, the chemical reactions of two or more substances that interact with each other,

4. List of chemistry mnemonics - Wikipedia

   en.wikipedia.org/wiki/List_of_chemistry_mnemonics

   A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.

5. Valence electron - Wikipedia

   en.wikipedia.org/wiki/Valence_electron

   Within each group (each periodic table column) of metals, reactivity increases with each lower row of the table (from a light element to a heavier element), because a heavier element has more electron shells than a lighter element; a heavier element's valence electrons exist at higher principal quantum numbers (they are farther away from the ...

6. Periodic table - Wikipedia

   en.wikipedia.org/wiki/Periodic_table

   Each chemical element has a unique atomic number (Z— for "Zahl", German for "number") representing the number of protons in its nucleus. [4] Each distinct atomic number therefore corresponds to a class of atom: these classes are called the chemical elements. [5] The chemical elements are what the periodic table classifies and organizes.

7. Period (periodic table) - Wikipedia

   en.wikipedia.org/wiki/Period_(periodic_table)

   A period on the periodic table is a row of chemical elements. All elements in a row have the same number of electron shells. Each next element in a period has one more proton and is less metallic than its predecessor. Arranged this way, elements in the same group (column) have similar chemical and physical properties, reflecting the periodic law.

8. Electronegativities of the elements (data page) - Wikipedia

   en.wikipedia.org/wiki/Electronegativities_of_the...

   As quoted from these sources in an online version of: David R. Lide (ed), CRC Handbook of Chemistry and Physics, 84th Edition. CRC Press. Boca Raton, Florida, 2003; Section 9, Molecular Structure and Spectroscopy; Electronegativity Pauling, L., The Nature of the Chemical Bond, Third Edition, Cornell University Press, Ithaca, New York, 1960.

9. Element-reactant-product table - Wikipedia

   en.wikipedia.org/wiki/Element-reactant-product_table

   An element-reaction-product table is used to find coefficients while balancing an equation representing a chemical reaction. Coefficients represent moles of a substance so that the number of atoms produced is equal to the number of atoms being reacted with. This is the common setup: Element: it is all the elements that are in the reaction ...