What Wavelength, in Nm, Can Strike a Metal Surface and Eject

question 9

Multiple Choice

What wavelength, in nm, can strike a metal surface and eject an electron with a kinetic energy of 1.89 × 10^-19 J if the binding energy of the metal is 289 kJ/mol?

• A) 1.89 × 10^-19 nm
• B) 2.75 nm
• C) 189 nm
• D) 290 nm
• E) 297 nm

Understand the various types of symbiotic relationships plants form with microorganisms, including mutualism and the benefits derived from these associations.

Identify the structures involved in plant-microorganism interactions, such as root nodules and mycorrhizae.

Describe the key processes and factors involved in nitrogen fixation and its significance for plants and ecosystems.

Recognize the role of specific compounds and environmental conditions that facilitate or inhibit plant-microorganism symbiosis.

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