## ch.2.1

$H_{\psi }=E_{\psi }$

1-D: $E_{TOTAL}\psi (x)=E_{k}\psi (x)+V(x)\psi(x)=-\frac{h^{2}}{8\pi ^{2}m}\frac{d^{2}\psi(x)}{dx^{2}}+V(x)\psi(x)$

Leslie Contreras 1D
Posts: 35
Joined: Fri Apr 06, 2018 11:02 am

### ch.2.1

I don't get the very first sentence, " An electron in an atom is like a particle in a box, in the sense that it is confined within the atom by the pull of the nucleus "
How are e- confined?

Chem_Mod
Posts: 18879
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 714 times

### Re: ch.2.1

The nucleus is positively charged by protons. electrons are negatively charged. So, it takes tremendous amount of energy to try to pull electrons away from the nucleus. Thus, it is essentially confined to certain distance away from the nucleus.

Valeria Viera 1B
Posts: 60
Joined: Fri Apr 06, 2018 11:05 am

### Re: ch.2.1

I think what it means is that e- are pulled by the nucleus and therefore can't escape I suppose? Like a particle that is stuck inside a box.

Chem_Mod
Posts: 18879
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 714 times

### Re: ch.2.1

It can escape, but you need to supply a sufficiently large enough energy to overcome the barrier (wall of a box)

Liliana Rosales 1E
Posts: 36
Joined: Wed Nov 15, 2017 3:03 am

### Re: ch.2.1

Chem_Mod wrote:It can escape, but you need to supply a sufficiently large enough energy to overcome the barrier (wall of a box)

Myles Chang 1B
Posts: 29
Joined: Fri Apr 06, 2018 11:02 am

### Re: ch.2.1

Electrons are found in orbitals surrounding the nucleus. The positive charge of the protons in the nucleus attracts the negatively charged electrons.