What is the frequency for C major chord?

A C major chord consists of three notes: C, E, and G. The fundamental frequency for the note C in the fourth octave (C4) is approximately 261.63 Hz. The frequencies for E (E4) and G (G4) are approximately 329.63 Hz and 392.00 Hz, respectively. When played together, these frequencies create the harmonious sound characteristic of a C major chord.