Calculate Ionisation Energy of Hydrogen Atom
How to Calculate Ionisation Energy of Hydrogen Atom
Introduction & Importance
Ionisation energy is a crucial concept in chemistry, measuring the energy required to remove an electron from an atom. For hydrogen, it’s particularly significant as it’s the simplest atom…
How to Use This Calculator
- Select the principal quantum number (n).
- Enter the atomic number (Z).
- Click ‘Calculate’.
Formula & Methodology
The ionisation energy (IE) of hydrogen can be calculated using the formula:
IE = -13.6 * (Z^2 / n^2)
Real-World Examples
| n | Z | IE (eV) |
|---|---|---|
| 1 | 1 | 13.6 |
| 2 | 1 | 3.4 |
Data & Statistics
| n | IE (eV) |
|---|---|
| 1 | 13.6 |
| 2 | 3.4 |
| 3 | 1.5 |
Expert Tips
- Ionisation energy increases with increasing principal quantum number (n).
- It decreases with increasing atomic number (Z).
Interactive FAQ
What is the ionisation energy of hydrogen (n=1)?
The ionisation energy of hydrogen with n=1 is 13.6 eV.
For more information, see NIST’s Atomic Weights and Ionic Charges and OpenStax’s Ionization Energy.