Germanium. Germanium is in the same group and is also a metalloid, like silicon
Quartz is the type of mineral used for both mechanical and chemical weathering
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An atomic number<span> is the </span>number<span> of protons in an atom. The Atomic Number also tells how many positive charges are in the Nucleus. The atomic number is found in the top left corner of a periodic table.
Iron's atomic number is 26
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