User:Sandbh

We choose [these things], not because they are easy, but because they are hard, because [they] will serve to organize and measure the best of our energies and skills

— John F. Kennedy, "We choose to go to the Moon"

The guidance is at WP:Talk_page_guidelines#Technical_and_format_standards.

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Astatine Heavy metals Metalloid

Allotropes of boron ♦ Block (periodic table) ♦ Dividing line between metals and nonmetals ♦ Electron affinity (data page) ♦ Fluorine ♦ Lead ♦ Light metal ♦ List of alternative nonmetal classes ♦ List of aqua-ions and their hydroxo- and oxo- derivatives in aqueous solution ♦ List of metalloid lists ♦ Metalloid (nomenclature origin and usage) ♦ Nonmetal ♦ Metal ♦ Nitrogen ♦ Noble metal ♦ Periodic table ♦ Periodic table (crystal structure) ♦ Post-transition metal (with thanks to Double sharp) ♦ Properties of nonmetals (and metalloids) by group ♦ Properties of metals, metalloids and nonmetals ♦ Toxic heavy metal ♦ Types of periodic tables

Last updated Nov 23

† SpringerLink + Researchgate
‡ Frontiers Media + Researchgate
§ ChemRxiv + Researchgate

Wikipedia related

•  Essay: A young person’s guide to 1RY, 2RY, and 3RY sources

Chemical elements related

•  Metal—finish the rewrite; submit to WP:FAC
•  Which elements are noble metals(?): Ru, Rh, Pd, Ag; Os, Ir, Pt, Au, with Ag as an outlier given its greater reactivity.
•  Periodic table—review

Eh?

•  Solving the Mysteries of the Solid Elements (From the Origin of Elements to Machine Parts)

•  Heavy metal (elements)
•  Nonmetal
•  Representative and transition element group names
•  The periodic table family tree; the n, n + 10 relationship; and Group 3

•  Nonmetal redraft (old)
  
•  Quotes from the literature (nonmetals)
  
•  Sandbox
  
•  User:Sandbh/Nonmetal_rfc
•  User:Sandbh/Alternate_periodic_tables_redraft

•  User:Double sharp/Group 3 sources
•  Eric Scerri lecture Mar 1, 2022, Univ. of New Hampshire
•  Semimetal electron density
•  Thermodynamics and the group 3 question