Formaldehyde Is a Covalent Compound Used as a Preservative for Biological

question 47

Multiple Choice

Formaldehyde is a covalent compound used as a preservative for biological specimens.Which statement concerning the Lewis structure of formaldehyde, shown below, is FALSE?

• A)Four electrons are being shared between the carbon and oxygen atoms.
• B)The oxygen atom has four valence electrons that are not being shared.
• C)The oxygen and carbon atoms each have an octet of electrons in their valence shells.
• D)The hydrogen atoms have incomplete valence shells.
• E)There are a total of 12 valence electrons in formaldehyde.

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Definitions:

Exhaustion Stage

The final stage of the stress response, characterized by a depletion of physical and psychological resources to cope with stress.

Adaptation Stage

The adaptation stage is a phase in stress-related theories where an individual adjusts to stressors, striving to restore balance and coping mechanisms.

Secondary Appraisal

The process of evaluating one's ability to cope with or manage the consequences of a potentially stressful event.

Primary Appraisal

The initial process by which an individual evaluates the significance of a situation or event as a potential threat, challenge, or harm to their wellbeing.