## Homework Statement

Use a (simplified) graph to compare the maximum probability (electron density) of the Radial Distribution Function for the 1s and 2s orbitals.

xxx

## The Attempt at a Solution

The rest I don't how to solve.[/B]

#### Attachments

• H_and_He_orbitals.gif
4.3 KB · Views: 6,284

Borek
Mentor
Just look at the plot - which function has a higher maximum electron density?

José Ricardo
Just look at the plot - which function has a higher maximum electron density?

The Helium?

Borek
Mentor
No.

You need to compare plots for the same atom, not for different atoms.

José Ricardo
No.

You need to compare plots for the same atom, not for different atoms.

Ahhh... I think the hydrogen has more density for in the 1s level.

Am I correct now, professor?

Borek
Mentor
Am I correct now, professor?

Don't professor me.

Yes, in _every_ atom 1s orbital has a higher maximum electron density. Note: it is important to be precise, "higher maximum density" means something else than "more density".

baldbrain
Good mornig, Borek!
So, The data that my professor gave was:
En = -2,18 x 10-18 x (1/n²) x Z² Joules, where En is the energy from the n level, Z = atomic number.

.v = c; Efoton = h.v; h = 6,626 x 10-34 J s; c = 3,00 x 108 m s -1;
Spectrum in the visible: 400 to 700nm

I don't know how to do this question with these data.

kuruman
Homework Helper
Gold Member
Good mornig, Borek!
So, The data that my professor gave was:
En = -2,18 x 10-18 x (1/n²) x Z² Joules, where En is the energy from the n level, Z = atomic number.

.v = c; Efoton = h.v; h = 6,626 x 10-34 J s; c = 3,00 x 108 m s -1;
Spectrum in the visible: 400 to 700nm

I don't know how to do this question with these data.
I think that this question has been answered. What your professor gave you is relevant to the other thread that you started here