What is the half-time of radiocarbon? (carbon-14)

5 years

57 years

573 years

5730 years

Carbon-14, 14C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons. Carbon-12 and carbon-13 are both stable, while the half-life of carbon-14 is 5,730 ±40 years.

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13%

22%

59%

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48%

9315

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104

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104

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723

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223

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426

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40%

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767

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29%

101

What is the name of the most radioactive isotope on the planet?

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Which of the following is not a chemical element?

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