How many different notes are in a chromatic scale

Chromatic scale is a musical scale with 12 Pitches. Each of them are a Semitone above or below it's adjacent pitches. Result in 12-Tone equal temperament, The Chromatic scale covers all 12 of the pitches that are available. Also there is only one Chromatic scale. Nobody really knows why there are only 12.

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The major and minor scales have 7 different notes, chromatic has 12 different notes, and whole tone has 6 different notes, all of which are in their one-octave scales.