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Author Question: An alpha particle is another name for a(n) a. electron b. proton c. neutron d. helium nucleus ... (Read 151 times)

frankwu

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on: Jul 28, 2018
An alpha particle is another name for a(n)
 a. electron
  b. proton
  c. neutron
  d. helium nucleus
  e. photon

Question 2

If someone tells you they have a sample of niobium-90, can you tell how many neutrons are in the nucleus?
 a. Yes, there are 41 neutrons.
  b. Yes, there are 90 neutrons.
  c. Yes, there are 49 neutrons.
  d. No, more information must be given.
  e. No, there is no such thing as niobium..


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kaillie

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

D

Answer to Question 2

C
You do need to look up the atomic number of niobium in the periodic table.


frankwu

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Reply 2 on: Jul 28, 2018
Excellent

ghepp

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Reply 3 on: Yesterday
Wow, this really help

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