The earth is constantly bombarded by cosmic rays emitted by the sun. The total energy received in the form of cosmic rays is small - no more than the energy received by the planet from starlight. But the energy of a single cosmic ray is very large, on the order of 200 million kJ/mol. These highly energetic rays react with atoms in the atmosphere to produce neutrons that then react with nitrogen atoms in the atmosphere to produce 14C, which decays back to 14N with a half-life of 5730 years by emitting an electron.
What is the difference between 14C and 14N atoms?
A) They have the same number of protons but different numbers of neutrons.
B) They have the same number of neutrons but different numbers of protons.
C) They have the same number of neutrons and protons but different numbers of electrons.
D) 14N has one more proton and one less neutron than 14C.
E) 14N has one more neutron and one less proton than 14C.
Correct Answer:
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