What is the color of dysprosium?
What is the color of dysprosium?
silver
Dysprosium is a rare-earth element and has a metallic, bright silver luster.
What are three interesting facts about dysprosium?
Facts About Dysprosium
- Atomic Number: 66 Atomic Symbol: Dy Atomic Weight: 162.500 Melting Point: 2,574 F (1,412 C) Boiling Point: 4,653 F (2,567 C)
- Word origin: From dysprositos, which means “difficult to get at” in Greek.
What group number is dysprosium?
Lanthanides
Fact box
| Group | Lanthanides | Melting point |
|---|---|---|
| Period | 6 | Boiling point |
| Block | f | Density (g cm−3) |
| Atomic number | 66 | Relative atomic mass |
| State at 20°C | Solid | Key isotopes |
What is the atomic mass for dysprosium?
162.5 u
Dysprosium/Atomic mass
Where are the sodium D lines on the spectrum?
Sodium Atomic Emission Spectrum The sodium spectrum is dominated by the bright doublet known as the Sodium D- lines at 588.9950 and 589.5924 nanometers. From the energy level diagram it can be seen that these lines are emitted in a transition from the 3p to the 3s levels. The line at 589.0 has twice the intensity of the line at 589.6 nm.
What makes up the sodium atomic emission spectrum?
Sodium Atomic Emission Spectrum. The sodium spectrum is dominated by the bright doublet known as the Sodium D- lines at 588.9950 and 589.5924 nanometers. From the energy level diagram it can be seen that these lines are emitted in a transition from the 3p to the 3s levels. The line at 589.0 has twice the intensity of the line at 589.6 nm.
What causes the bright yellow light from a sodium lamp?
The well known bright doublet which is responsible for the bright yellow light from a sodium lamp may be used to demonstrate several of the influences which cause splitting of the emission lines of atomic spectra. The transition which gives rise to the doublet is from the 3p to the 3s level, levels which would be the same in the hydrogen atom.
Where does the light from sodium come from?
All other lines are a factor of two or more fainter than that one, so for most practical purposes, all the light from luminous sodium comes from the D-lines.