Radius of nth Bohr orbit (hydrogen-like) (r_n = n² a₀ / Z)

jee-mainjee-advancedneet-ug

r_n = n² a₀ / Z

What each symbol means

SymbolWhat it stands for
ZAtomic number of nucleus
nPrincipal quantum number
a_0Bohr radius
r_nRadius of nth stationary orbit (m)

When to use this

Non-relativistic Bohr model; hydrogen-like single electron dominant.