The interval from the tonic note to the third note of a major scale is a major third.
The note is A flat.
The note "A"
The leading tone is the seventh note in the scale. For D-flat major, this would be C.
The leading tone is the seventh scale degree of the diatonic scale which in F Major is the note "E".
A flat The major third is the third note in the major scale of the key in question. The minor third for instance is G which is is the third note in the minor scale. dr
The interval from the tonic note to the third note of a major scale is a major third.
The interval from the tonic note to the third note of a major scale is a major third.
The note is A flat.
c
The third note in a major or minor scale is called a mediant.
A triad consists of three notes: the tonic (or the first note of the scale), the mediant (or the third note of the scale), and the dominant (or the fifth note of the scale).For a major triad, the interval between the first and third note is a major third, and the interval between the first and fifth note is a perfect fifth.For a minor triad, the interval between the first and third note is a minor third, and the interval between the first and fifth is a perfect fifth.
Minor
B
Depending on which scale you are playing, it can be any note. If you are talking about solfegge syllables, the third syllable is "mi". If you are playing a C Major scale, the third note, mi, would be the note E.
The mediant of any major scale is the note that is a third above the tonic (root) of the scale. In the key of F sharp major, the tonic is F sharp, so the mediant would be A sharp.
A minor chord (triad, at least) is the first, third, and fifth notes of any minor scale played at the same time.