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Author Question: When an unstable nucleus expels a positron ________. A) its mass number is decreased by four ... (Read 77 times)

tiara099

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on: Aug 27, 2018
When an unstable nucleus expels a positron ________.
 
  A) its mass number is decreased by four units
  B) its atomic number is decreased by one unit
  C) its atomic number is increased by one unit
  D) its mass number is decreased by one unit

Question 2

A metalloid
 
  A) is the same as a metal.
  B) is located on the left side of the periodic table.
  C) has properties intermediate between metals and nonmetals.
  D) is in the center of the periodic table.


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Tonny

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Reply #1 on: Aug 27, 2018
Answer to Question 1

B

Answer to Question 2

C


tiara099

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Reply #2 on: Aug 27, 2018
Thank you!


Tonny

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Reply #3 on: Aug 27, 2018
Always glad to help...


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