Where is the atomic number of species and J

CHEMISTRY · Subjective · CBSE · Chemistry · Structure of Atom · Structure of Atom

Problem

E_n = -\frac{Z^2 B}{n^2}

where

Z

is the atomic number of species and

B = 2.179 \times 10^{-18}

J. If energy level of

\text{Li}^{2+}

ion in a particular shell is

-2.179 \times 10^{-18}

J, the principal quantum number of shell is .....