What is the most dissonant interval in music theory and how does it contribute to the overall tension and resolution in a musical composition?

The most dissonant interval in Music Theory is the tritone, which is an interval of three whole tones. It creates a sense of tension and instability in a musical composition due to its dissonant sound. When the tritone is resolved to a more consonant interval, such as a perfect fifth, it contributes to the overall sense of resolution and completion in the music.