What is the formula for finding the radius of an atom?

Answer 1

The radius of an atom can be estimated using various models, but a common approach is to use the Bohr model for hydrogen-like atoms, where the radius (r) can be calculated using the formula ( r = \frac{n^2 \cdot h^2}{4\pi^2 \cdot k \cdot e^2 \cdot Z} ). Here, ( n ) is the principal quantum number, ( h ) is Planck's constant, ( k ) is Coulomb's constant, ( e ) is the elementary charge, and ( Z ) is the atomic number. However, for more complex atoms, empirical methods or quantum mechanical models are often used to determine atomic radii.