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Author Question: In neutron capture by an atomic nucleus, the mass number of the nucleus changes by a. 2. b. 1. c. ... (Read 188 times)

awywial

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on: Jul 28, 2018
In neutron capture by an atomic nucleus, the mass number of the nucleus changes by
 a. 2.
  b. 1.
  c. 0.
  d. +1.
  e. +2.

Question 2

The present standard for time is based on
 a. the transition of an electron between two energy levels of the cesium-133 atom.
  b. Earth's rotation.
  c. Earth's orbit.
  d. none of these.


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ciecieme

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Reply #1 on: Jul 28, 2018
Answer to Question 1

d

Answer to Question 2

a


awywial

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Reply #2 on: Jul 28, 2018
TY


ciecieme

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Reply #3 on: Jul 28, 2018
You're welcome


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