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Answer (1 of 2): carbon has 3 common isotopes.. 6 proton/electron pairs… with 6, 7, or 8 neutrons in the nucleus as a buffer between positive charges… all natural populations of carbon have all 3 isotopes in greater or lesser amounts.. depending on the environment and the history of the area… it'
Carbon - Wikipedia
Is graphite made of pure carbon? - Quora
What is graphite? - Quora
Why is graphite used in the manufacturing of pencils? - Quora
What is carbon metal made of? - Quora
What is the name of the property of graphite that makes an exceptional nonmetal? - Quora
Are pencils still made with graphite? - Quora
Is graphite made of pure carbon? - Quora
If graphite and carbon are both made from pure carbon why do they look different? - Quora
Does carbon exist as elemental molecules? - Quora
What is the crystallized element in diamonds? - Quora
Graphite, Properties, Uses, Structure
What is the difference between charcoal and carbon? - Quora
If diamond and graphite are both made out of carbon why are they so different.? - Quora
What is the relation between carbon and graphite? - Quora