Electron Density | NanoPhysics

Parameters

Atom / nuclear charge Z

Principal quantum number n

Orbital quantum number l

Magnetic quantum number m

Point density (visual)

3D Electron Density Cloud

Self-Assessment

Q1. What does ρ(r) = |ψ(r)|² represent?

A The electron's velocity

B The probability density — where the electron is likely to be found

C The nuclear charge

D The total energy of the atom

Q2. Which orbital is always spherically symmetric?

A p orbital (l=1)

B d orbital (l=2)

C s orbital (l=0)

D f orbital (l=3)

Q3. What is the number of radial nodes equal to?

A n + l

B n - l - 1

C 2l + 1

D n²

Q4. How is this page related to DFT?

A No connection at all

B DFT uses ρ(r) as the central variable to describe multi-electron systems

C DFT changes the formula for ρ(r)

D ρ(r) only exists in molecules, not in atoms