Energy levels in atoms

  • Thread starter waterliyl
  • Start date
11
0
Why do electrons closer to nucleus have
Less energy than electrons first away?

Thanks
 
610
2
Hi,
I guess the other way is true: The electrons that are closer to nucleus require more energy to remove from the atom. The outer electrons can be removed with less energy when compared to electrons that are closer to nucleus. Hope it helps.
Cheers,
Rajini
 

Simon Bridge

Science Advisor
Homework Helper
17,823
1,637
They have a lower energy level because they are held tighter ... thought about another way: the electrons must be moving faster (higher kinetic energy) in order to avoid being pulled closer.
 

jtbell

Mentor
15,380
3,139
The electrons that are closer to nucleus require more energy to remove from the atom.
True! However, when the electron is "completely removed" we say (by convention) that it has zero energy. Electrons that are bound in an atom have negative energy. When removing an electron, we add energy, raising it from negative to zero. If an electron requires more energy to remove, it must have been at a lower (more negative) energy to begin with.

Think of raising an object out of a hole in the ground.
 

Related Threads for: Energy levels in atoms

  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
6
Views
2K
  • Last Post
Replies
3
Views
3K
  • Last Post
Replies
1
Views
407
Replies
5
Views
2K
Replies
23
Views
5K
Replies
6
Views
5K

Hot Threads

Top