Question

_____ is said to be radioactive.

a) Carbon-12
b) Carbon-13
c) Carbon-14
d) Carbon-15​

Answer 1

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Carbon-12

Carbon is a non-metal element. At room temperature it is in a solid state. Carbon exists in different forms, including graphite, diamond and graphene. Depending on its form carbon has different properties.

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Answer 2

Carbon-12

Carbon is a non-metal element. At room temperature it is in a solid state. Carbon exists in different forms, including graphite, diamond and graphene. Depending on its form carbon has different properties.