Which Characteristics Describe the Bonding MO for the Weakest Individual

question 33

Multiple Choice

Which characteristics describe the bonding MO for the weakest individual covalent bond in ethene,C₂H₄?
I. The MO possesses π symmetry.
II.The MO possesses σ symmetry.
III.The MO can be called the HOMO.
IV.The MO can be called the LUMO.
V.The MO contains two electrons of opposing spin.

• A)All of the choices
• B)II, III, and V
• C)II and V
• D)I and V
• E)I, III, and V

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Definitions:

Turgor Pressure Gradient

The difference in pressure potential between two regions in a plant, contributing to water and nutrient movement.

Turgor Pressure

The pressure within plant cells that is attributable to the water-filled vacuole, pushing the cell membrane against the cell wall, and is crucial for plant rigidity and stability.

Translocation

The movement of substances within a plant, particularly the transport of sugars and other molecules from leaves to other tissues via the phloem.

Pressure-Flow Model

A hypothesis describing how nutrients, especially sugars, are transported in plants from sources to sinks via the phloem.