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Author Question: Which event does not occur during the decay of potassium-40 isotopes? A) An electron orbiting ... (Read 59 times)

lidoalex

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on: Jul 16, 2018
Which event does not occur during the decay of potassium-40 isotopes?
 
  A) An electron orbiting near the nucleus enters into the nucleus and combines with a proton to produce a neutron.
  B) Electrons rearrange, producing x-rays.
  C) A neutron changes to a proton and emits an electron.
  D) A proton is ejected from the nucleus.

Question 2

Where have the oldest dated sand grains been found on Earth?
 
  A) Australia
  B) Canada
  C) The United States
  D) Africa


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steff9894

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Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: A


lidoalex

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Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

sultansheikh

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Reply 3 on: Yesterday
:D TYSM

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