The Red Line in the Hydrogen Emission Spectrum Is 656

question 2

Multiple Choice

The red line in the hydrogen emission spectrum is 656 nm.If the energy of the nth level is -13.6/n ² eV,then calculate the transition between n levels that this emitted photon comes from.

• A)n = 2 to n = 3
• B)n = 4 to n = 3
• C)n = 5 to n = 2
• D)n = 3 to n = 2
• E)n = 2 to n = 4

Understand the sequence and impact of major events in Earth's history on its biota.

Understand the concept of subject-verb agreement.

Identify singular and plural subjects in sentences.

Apply subject-verb agreement rules in varied sentence structures.

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