Because the most important spectral lines of sodium are in the yellow region of the spectrum.
Sodium iodide burns with a yellow flame.
Both sodium oxide and sodium chloride contain sodium ions which exhibit a characteristic yellow color when burned. This color comes from the emission of energy as the electrons in the sodium ions transition to lower energy levels. Thus, both compounds burn with a yellow flame.
Sodium ions (Na+, from any sorium salt) produce an yellowish orange colored flame with wavelength averaging at a 589.3 nm (actually two dominant spectral lines very close together at 589.0 and 589.6 nm).
Sodium is highly reactive with air and can ignite spontaneously. A small flame is not required to ignite sodium, as it reacts vigorously with oxygen in the air, resulting in a bright yellow flame and production of sodium oxide.
Sodium chloride (NaCl) does not have a characteristic color when exposed to a flame test. Sodium compounds are usually identified by the strong yellow color they produce in a flame test due to the sodium ion.
An yellow color, from sodium
yellow
Sodium iodide burns with a yellow flame.
The most important emission wavelength of sodium is in the yellow region.
Bright yellow :: This is the sodium ions. Any sodium compound will give a flame test colour of yellow/
You get and orange - yellow colour.
Orangish yellow
When sodium oxide is burned, it typically produces a yellow flame.
Both sodium oxide and sodium chloride contain sodium ions which exhibit a characteristic yellow color when burned. This color comes from the emission of energy as the electrons in the sodium ions transition to lower energy levels. Thus, both compounds burn with a yellow flame.
Sodium ions (Na+, from any sorium salt) produce an yellowish orange colored flame with wavelength averaging at a 589.3 nm (actually two dominant spectral lines very close together at 589.0 and 589.6 nm).
Sodium is highly reactive with air and can ignite spontaneously. A small flame is not required to ignite sodium, as it reacts vigorously with oxygen in the air, resulting in a bright yellow flame and production of sodium oxide.
Sodium chloride (NaCl) does not have a characteristic color when exposed to a flame test. Sodium compounds are usually identified by the strong yellow color they produce in a flame test due to the sodium ion.