Category:Elements

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Mendeleev's 1869 periodic table

Chemical elements including carbon, hydrogen and roentgenium

Subcategories

  • Carbon - a chemical element with the symbol C and the atomic number 6. Essential building block for life
  • Cobalt
  • Hydrogen - A chemical element with the symbol H and the atomic number of 6. It constitutes 75% of the known mass of the universe

Subcategories

This category has the following 3 subcategories, out of 3 total.

C

H

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