Does a shell have to contain electrons in order to exist? A) A ...

[Starlight]

Does a shell have to contain electrons in order to exist?
 
  A) A shell is a form of energy that requires electrons in order to exist.
  B) A shell is just a region of space which may or may not contain electrons.
  C) A shell is just a conceptual model, hence, it doesn't really exist with or without the electron.
  D) Two of the above are reasonable answers.

Question 2

What do the electron configurations for all the group 18 noble gases have in common?
 
  A) They have the same number of electrons.
  B) They occupy the same number of shells.
  C) Their outermost occupied shells are filled to capacity.
  D) all of the above

[aadams68]

Answer to Question 1

Answer: D

Answer to Question 2

Answer: C

[Starlight]

Wow, this really help

[Alyson.hiatt@yahoo.com]

Thanks for the timely response, appreciate it