if you excite an atom or an ion by very stron...

if you excite an atom or an ion by very strong heating, electrons can be promoted from their normal unexcited state into higher orbitals. as they fall back down to lower levels (either in one go or in several steps), energy is released as light. this is the basis of flame tests that can be done on metals to identify a particular element. looking at the flame through a spectroscope, you can observe a line spectrum (as shown). what is a best explanation for different metals having various colors? a the spectrum of lines will be produced, some of which will be in the visible part of the spectrum. the color you see will be the highest energy observed. b the spectrum of lines will be produced, all of which will be in the visible part of the spectrum. the color you see will be the most common color in the spectrum. c the spectrum of lines will be produced, all of which will be in the visible part of the spectrum. the color you see will be a combination of all these individual colors. d the spectrum of lines will be produced, some of which will be in the visible part of the spectrum. the color you see will be a combination of all these individual colors.

Answer

# Brief Explanations: - When atoms or ions are excited (by heating), electrons move to higher - energy orbitals. When they fall back, energy (in the form of light) is released. The light has specific wavelengths (lines in the spectrum). - Not all of the lines in the spectrum of a metal are in the visible range. Some are in the visible range (e.g., for sodium, there is a prominent yellow line). - The color we observe in a flame test is a combination of the visible - light lines in the spectrum of the metal. For example, different metals have different sets of visible - light emission lines, and the combination of these lines gives the characteristic color of the metal in the flame test. # Answer: D