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  2. Rhenium - Wikipedia

    en.wikipedia.org/wiki/Rhenium

    Rhenium is a chemical element; it has symbol Re and atomic number 75. It is a silvery-gray, heavy, third-row transition metal in group 7 of the periodic table. With an estimated average concentration of 1 part per billion (ppb), rhenium is one of the rarest elements in the Earth's crust. It has one of the highest melting and boiling points of ...

  3. Periodic table - Wikipedia

    en.wikipedia.org/wiki/Periodic_table

    The periodic table, also known as the periodic table of the elements, is an ordered arrangement of the chemical elements into rows ... Rhe­nium 75 Re ...

  4. Group 7 element - Wikipedia

    en.wikipedia.org/wiki/Group_7_element

    Group 7, numbered by IUPAC nomenclature, is a group of elements in the periodic table.It contains manganese (Mn), technetium (Tc), rhenium (Re) and bohrium (Bh). This group lies in the d-block of the periodic table, and are hence transition metals.

  5. List of chemical elements - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_elements

    Like the periodic table, the list below organizes the elements by the number of protons in their atoms; it can also be organized by other properties, such as atomic weight, density, and electronegativity. For more detailed information about the origins of element names, see List of chemical element name etymologies.

  6. 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.

  7. Extended periodic table - Wikipedia

    en.wikipedia.org/wiki/Extended_periodic_table

    This is an accepted version of this page This is the latest accepted revision, reviewed on 22 January 2025. Periodic table of the elements with eight or more periods Extended periodic table Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium ...

  8. Melting points of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Melting_points_of_the...

    Melting point of the elements in the periodic table [a] [b] ... Re 3459 K (3186 °C) Os 3306 K (3033 °C) Ir 2719 K (2446 °C) Pt 2041.4 K (1768.3 °C) Au 1337.33 K

  9. Dividing line between metals and nonmetals - Wikipedia

    en.wikipedia.org/wiki/Dividing_line_between...

    Thompson R 1999, 'Re: What is the metalloid line and where is it located on the Periodic Table?', MadSci Network; Walker J 1891, 'On the periodic tabulation of the elements', The Chemical News, vol. LXIII, no. 1644, May 29, pp. 251–253; Whitley K 2009, Periodic table: Metals, non-metals, and semi-metals