Three Deadly Elements

Polonium

The symbol of Polonium symbol is Po. Its atomic number is 84, its atomic mass is 209 u, and it has 84 protons and 84 electrons. The reason it’s called Polonium is because its chemist came from Poland. Marie Curie is the chemist who discovered Polonium in the year 1898.

Po By SM358 - Inkspace, Public Domain, https://commons.wikimedia.org/w/index.php?curid=112491599

Three cool facts

  1. Fact 1:Polonium can be a metal, non-metal, and metaloid.
  2. Fact 2: Polonium can not penetrate human skin or paper.
  3. Fact 3: Polonium needs to be ingested to hurt anyone.

Mercury

The symbol of Mercury is Hg. Its atomic number 80, its average atomic mass is 200.59 u, and has 80 protons and electrons. It's name came from the Roman God of the same name. No one knows who discovered it, but it was around since 1500 BCE.

Hg Public Domain

Three cool facts

  • Fact 1: The sign of Mercury is based off the Greek name Hydragyrum.
  • Fact 2: Mercury was used for medicine for most of history.
  • Fact 3: Mercury is not very reactive to most acids.

    • Arsenic

    The symbol for Arsenic is As. Its atomic number is 33, its average atomic mass is 74.9216 u, and it has 33 protons and 42 electrons. "Arsenic" comes from the Persian word for yellow pigment. It ws discovered by Albertus Magnus in the 1200s.

    Ar Ahazard.sciencewriter - Own work

    Three cool facts

  • Fact 1: Arsenic was used to treat dieases that penicillin treated.
  • Fact 2: Arsenic is used in small quantites
  • Fact 3: Arsenic is used to make harder and rounder bullets

    • Sources

    https://pubchem.ncbi.nlm.nih.gov/

    http://hobart.k12.in.us/

    https://www.rsc.org/

    https://www.rferl.org/

    https://umaine.edu/

    https://kingcounty.gov/