Answer :
Type II supernovae are defined as supernovae that have hydrogen lines in their spectra and are the result of the core of a big star collapsing. A crucial piece of proof is the hydrogen spectrum.
The atom's quantized electrical structure to be displayed. When an electric discharge is transmitted across a gaseous hydrogen molecule, the hydrogen atoms of the molecule immediately disintegrate. As a result, energetically excited hydrogen atoms begin to emit electromagnetic radiation is known as hydrogen spectrum. supernova class II the process of formation. a large, developed star's layers, which resemble an onion, soon before core collapse. stars that are much more massive than theory-based models. Three of the four known are covered by the Standard Model of particle physics.
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