The reaction type represented by AB ---> A + B is known as synthesis
decomposition
combustion
none of the above

The answer is bhope this

Ch3cooh i think this is the answer

The main types of electromagnetic radiation. radio  waves have  the lowest frequencies  and  longest  wavelengths, while gamma  waves have highest frequencies  and shortest wavelengths. the wavelengths vary across the electromagnetic spectrum from about 10–15 m to more than 104 m.hope it !