Line spectrum of sodium contains _ colored lines separated by a definite distance
Correct answer: B. two yellow
- A. one yellow
- B. two yellow
- C. two brown
- D. two golden
Explanation
Sodium emits two yellow lines in its line spectrum, known as the D1 and D2 lines. These lines are very close in wavelength (~589.0 nm and 589.6 nm). The separation is small but definite, giving the characteristic sodium doublet
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