A chemical element occurs naturally in the form of two different simple crystalline substances.
| November 30, 2020 | education
A chemical element occurs naturally in the form of two different simple crystalline substances. Crystals of one substance, as a rule, are colorless, transparent, very hard, and do not conduct electric current. Crystals of another substance are black, soft, conduct an electric current. What are these substances called? What are their crystal lattices.
Carbon with its allotropic modifications:
1 – diamond, solid atomic crystal lattice in the form of a cube
2 – graphite, layered atomic crystal lattice
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