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Ionization
Because emission spectrum are the result of the electron configuration of the element and no two elements have exactly the same electron configuration.
Emission spectrometry is an old and largely known method for quantitative and qualitative analysis of elements.
combust
Electromagnetic radiation.
The color depends on the lines of the emission spectrum of each different element.
Every element can produce an emission spectrum, if it is sufficiently heated. Of the 4 elements that you mention, neon is the most useful, in terms of its emission spectrum, and it is used in a certain type of lighting.
the wavelength of emission becomes shorter
That is a heated O2 sensor.
Identify elements
Ionization
He investigated the emission spectra of heated elements. With Gustav Kirchhoff they discovered cesium. He also discovered rubidium. the Bunsen burner... that is all i can think of!
PROTON has a positive charge. In certain elements there is proton emission possible. Refer to radioactive elements in detail to get exact answer to your question.
Radioactive decay.
Because an emission spectrum is specific to an element.It can be used to identify the element
Specta/spectate puerum.
Because emission spectrum are the result of the electron configuration of the element and no two elements have exactly the same electron configuration.