(a) What is meant by the ionisation energy of a hydrogen-like atom? (b) Using the…

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

Problem

(a) What is meant by the ionisation energy of a hydrogen-like atom? (b) Using the expression for the energy of the nth stationary state, explain qualitatively why the ionisation energy of a hydrogen-like ion varies as

Z^{2}

, where

Z

is the atomic number. (c) Calculate the ratio of the ionisation energies of H, He

^{+}

and Li

^{2+}

. Take

E_{1}=-13.6\,\text{eV}

for the hydrogen atom.

Related theory

Atomic Structure
Bohr's atomic model
Structure of Atom
Bohr's Model of Atom

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