G major, C major, D major.
There is actually no such thing as a "dominant scale", however you can use the notes of a dominant 7th chord as a scale and that can begin on any note, the dominant 7th chord in C major is G7 and G7 uses all white keys (G, B, D and F), the structure of a dominant 7th chord is the major triad plus the flatted 7th.
An accidental chord is a chord which contains one or more notes which are considered foreign to the key in which the song is written.An example might be to include an E flat major chord in a song played in C major.
The chord of Em contains the notes E, G, and B. The scale of E minor contains the notes E, F♯, G, A, B, C, and D.
The same as an A minor chord: A, C, E. If the seventh were included, G#.
The notes of the G Major chord are G, B and D.
G B and D
The 'G' Major chord is 'G','D','B'
C Major chord = C E G
The E-major triad is composed of an E, a G#, and a B. To make this chord minor, flat the G#.
CEG make up a C Major chord
If you mean what are the notes, it's E, G#, and B. Added: if you mean an E major chord.
E-g#-b-d#
C major
E Major triad consists of E, G# and B.
The notes in the D major chord are D, F-sharp, and A.
The notes to a c chord are c as the root, e as the third, and g as the fifth. The notes can vary, depending on the fact that the chrod could be augmented, diminished, major, or minor.