What Is the Wavelength of the Emitted Photon If an Electron

question 59

Multiple Choice

What is the wavelength of the emitted photon if an electron in the hydrogen atom makes a transition from the n = 7 state to the n = 2 state? (c = 3.00 × 10⁸ m/s,h = 6.626 × 10^-34 J ∙ s,1 eV = 1.60 × 10^-19 J)

• A)199 nm
• B)365 nm
• C)4480 nm
• D)398 nm
• E)796 nm

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Definitions:

Sclerenchyma

A type of plant tissue known for its thick, lignified cell walls, which provide structural support.

Fibers

Indigestible plant substances consisting mostly of cellulose, aiding in digestion and bowel health.

Sclereids

Thick-walled, often branched cells found in plants that provide support and deter herbivory.

Guard Cells

Pairs of cells surrounding stomata in plant leaves and stems, regulating gas exchange and water loss by controlling the opening and closing of stomata.