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Author Question: Why did the big bang only create hydrogen, helium, and trace amounts of lithium? What will be an ... (Read 29 times)

lracut11

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on: Jul 27, 2018
Why did the big bang only create hydrogen, helium, and trace amounts of lithium?
 
  What will be an ideal response?

Question 2

All stars produce an absorption spectra.
 
  a. True
  b. False
  Indicate whether the statement is true or false


perkiness

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

Atoms with an atomic weight of 5 or 8 are unstable. Lithium can have weights of 6 or 7 . Nuclei with atomic weights of 5 and 8 are radioactive and decay almost instantly back into smaller nuclei. Therefore, it is hard to jump from helium (4) to Lithium (6) without having a stable atom with a weight of 5 . It is virtually impossible to jump from lithium-7 to higher elements without a stable element at 8.

Answer to Question 2

True


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