Convert Rydberg constant to kilojoule
Please provide values below to convert Rydberg constant [Ry] to kilojoule [kJ], or Convert kilojoule to Rydberg constant.
1 Ry = 2.1799e-21 kJ. To convert Rydberg constant to kilojoule, multiply the value by 2.1799e-21; to go the other way, divide by it (1 kJ = 4.5874e+20 Ry). Both units measure energy and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 Ry = 2.1799e-21 kJ
- 1 kJ = 4.5874e+20 Ry
- 10 Ry = 2.1799e-20 kJ
- 100 Ry = 2.1799e-19 kJ
How to Convert Rydberg Constant to Kilojoule
1 Ry = 2.1798741e-21 kJ
Example: convert 15 Ry to kJ:
15 Ry = 15 × 2.1798741e-21 kJ = 3.26981115e-20 kJ
Rydberg Constant to Kilojoule Conversion Table
| Rydberg constant | kilojoule |
|---|---|
| 1 Ry | 2.1799e-21 kJ |
| 2 Ry | 4.3597e-21 kJ |
| 3 Ry | 6.5396e-21 kJ |
| 5 Ry | 1.0899e-20 kJ |
| 10 Ry | 2.1799e-20 kJ |
| 20 Ry | 4.3597e-20 kJ |
| 50 Ry | 1.0899e-19 kJ |
| 100 Ry | 2.1799e-19 kJ |
| 500 Ry | 1.0899e-18 kJ |
| 1000 Ry | 2.1799e-18 kJ |
Rydberg Constant
The Rydberg constant (Ry) is a physical constant that represents the highest wavenumber (inverse wavelength) of any photon in the hydrogen atom's emission spectrum, used to calculate spectral lines.
History/Origin
Named after the Swedish physicist Johannes Rydberg, the Rydberg constant was introduced in the late 19th century as part of Rydberg's formula to describe the spectral lines of hydrogen, significantly advancing atomic physics.
Current Use
The Rydberg constant is used in quantum physics and spectroscopy to determine energy levels of hydrogen and other hydrogen-like atoms, and in calculations involving atomic spectra and quantum mechanics.
Kilojoule
A kilojoule (kJ) is a unit of energy equal to 1,000 joules, used to quantify energy transfer or work done.
History/Origin
The kilojoule was introduced as part of the International System of Units (SI) to provide a convenient scale for measuring energy, especially in fields like nutrition and physics, replacing the joule for larger quantities.
Current Use
The kilojoule is widely used in nutrition to express food energy content, in physics and engineering to measure energy transfer, and in various scientific and industrial applications within the 'Energy' converter category.
Frequently Asked Questions
What is 1 Rydberg constant in kilojoule?
1 Rydberg constant (Ry) = 2.1799e-21 kilojoule (kJ).
How do you convert Rydberg constant to kilojoule?
Multiply the Rydberg constant value by 2.1799e-21. For example, 25 Ry × 2.1799e-21 = 5.4497e-20 kJ.
What is 10 Rydberg constant in kilojoule?
10 Ry = 2.1799e-20 kJ.
Which unit is larger, the Rydberg constant or the kilojoule?
The kilojoule is the larger unit: 1 Ry equals only 2.1799e-21 kJ.