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Author Question: In which group do all atoms have two valence electrons in the ground state? A) alkali metals B) ... (Read 177 times)

Awilson837

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on: Aug 27, 2018
In which group do all atoms have two valence electrons in the ground state?
 
  A) alkali metals
  B) alkaline earth metals
  C) halogens
  D) noble gases

Question 2

Which of the following is not a beta emitting reaction?
 
  A) 231Th  231Pa
  B) 131I  131Xe
  C) 90Sr  90Y
  D) 226Ra  222Rn


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succesfull

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

B

Answer to Question 2

D


Awilson837

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Reply 2 on: Aug 27, 2018
Gracias!

marict

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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