Multiple choice

Which of the following elements will form the highly complex allotropic diamond with nearly twice the density of graphite at very high pressure ?

  1. Germanium

  2. Tin

  3. Helium

  4. Silicon

  5. Carbon
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Silicon, a tetravalent metalloid, is a chemical element with the symbol Si and atomic number 14. It is less reactive than its chemical analog carbon, the nonmetal directly above it in the periodic table, but more reactive than germanium, the metalloid directly below it in the table.

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