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Author Question: Give the symbol of the element that has the following electron configuration: Ar 4s13d6 A. Mn ... (Read 123 times)

londonang

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on: Aug 27, 2018
Give the symbol of the element that has the following electron configuration: Ar 4s13d6
 
  A. Mn
   B. Fe
   C. Ni
   D. Cu

Question 2

Which of the following statements is a natural law?
 
  A) The mass of substances, before and after a chemical change, is the same.
  B) If the volume of a gas doubles, the pressure decreases by a factor of two.
  C) The energy derived from a change in mass is found by E = mc2.
  D) all of the above
  E) none of the above


akemokai

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

B

Answer to Question 2

D


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londonang

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Reply #2 on: Aug 27, 2018
Both answers were spot on, thank you once again


akemokai

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Reply #3 on: Aug 27, 2018
Great! Please up vote :D


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