Why transition metal can not be determined by a flame photometry?

Answer 1

Transition metals cannot be accurately determined by flame photometry because they typically have multiple oxidation states, leading to complex emission spectra that are difficult to interpret. Additionally, transition metals often form stable complexes with other compounds in the flame, further complicating the analysis. As a result, flame photometry is not suitable for the precise determination of transition metals, and other analytical techniques such as atomic absorption spectroscopy or inductively coupled plasma spectroscopy are more commonly used for their quantification.

Answer 2

Transition metals typically have complex electronic structures with multiple oxidation states, leading to emission spectra that are less specific and difficult to interpret than elements with simpler structures. Additionally, transition metals can form insoluble compounds or compounds with high melting points, which can interfere with the emission process in flame photometry, making it harder to accurately quantify their presence.

Answer 3

Since the temperature isn't high enough to excite transition metals, the method is selective toward detection of alkali and alkali earth metals.