How calculation of lambda max is done?

Lambda max (λ max) refers to the wavelength at which a substance absorbs the maximum amount of light. It is determined using spectrophotometry, where a sample is exposed to a spectrum of wavelengths, and the absorbance is measured. The λ max is identified as the peak point on the absorbance versus wavelength graph, indicating the wavelength at which the substance has the highest absorbance. This value is crucial for understanding the electronic transitions in molecules and is often used in quantitative analysis.