a.True.
The ordely geometric arrangement of atmos is called a crystalline solid.
3rd one:
it is very reactive because it does not have a full Valence shell.
this is because it's in group 1 so it has one electron in its outer shell, and it wants to have a full outer shell ( which it can gain by losing the electron in a reaction).
Hope this helps :)
Answer:
if this is a mock then just guess
Explanation:
