The leading tone in any key is one half-step below the tonic. In the key of D-sharp, the leading tone is C-double-sharp (it can't be spelled as D-natural, because the letter D is already used for the tonic).
F sharp is the leading note (7th degree) of the G major scale.
The leading tone in a scale is one half-step below the tonic. In the key of C# major, the leading tone is B#.
E#
The leading tone in a scale is the 7th scale degree, one half-step below the tonic.
To determine what the seventh note (leading note) is in a minor scale, you need to determine which minor scale you are playing. The seventh note of a natural minor scale, you take the note which is a whole tone (2 notes) below your tonic (the note which is the name of your scale). Example: In A natural minor scale the leading note is G. The seventh note of a harmonic minor scale is a semitone (1 note) below your tonic note. Ex: In E harmonic minor scale, the leading note is D sharp. The seventh note of a melodic minor scale (ascending) will be a semitone below your tonic note, like your harmonic minor scale. Descending the melodic minor scale reverts to its natural state, therefore your seventh note will be a whole tone below your tonic.
F sharp is the leading note (7th degree) of the G major scale.
The leading tone in a scale is one half-step below the tonic. In the key of C# major, the leading tone is B#.
E#
The leading tone is the seventh scale degree of the diatonic scale which in F Major is the note "E".
The leading tone is the seventh note in the scale. For D-flat major, this would be C.
resolution
The leading tone in a key is one half-step below the tonic. In the key of A major, the leading tone is G-sharp.
G sharp (enharmonic A flat).
C-sharp. The leading tone is one half-step below the tonic.
The leading tone in a scale is the 7th scale degree, one half-step below the tonic.
G sharp (enharmonic A flat).
To determine what the seventh note (leading note) is in a minor scale, you need to determine which minor scale you are playing. The seventh note of a natural minor scale, you take the note which is a whole tone (2 notes) below your tonic (the note which is the name of your scale). Example: In A natural minor scale the leading note is G. The seventh note of a harmonic minor scale is a semitone (1 note) below your tonic note. Ex: In E harmonic minor scale, the leading note is D sharp. The seventh note of a melodic minor scale (ascending) will be a semitone below your tonic note, like your harmonic minor scale. Descending the melodic minor scale reverts to its natural state, therefore your seventh note will be a whole tone below your tonic.