Discussion
Assertion (A): Assertion: Atomic absorption is less affected by flame temperature than atomic emission.
Reason (R): Reason: The ground state population is far larger than the excited state population.
Select the correct answer from the options below.
Answer: A
Both are true and the second is the reason: a population already close to a hundred per cent barely changes with temperature, while the tiny excited fraction that emission depends on changes by a large factor. Measuring a quantity that is already near its maximum makes a method robust against the variable that determines it, which is a design principle worth recognising well beyond this technique.
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