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A 60-year-old woman is brought to the office because for the past 18 months she has neglected her personal hygiene and displayed inappropriate behavior. She says the landlord, who lives upstairs, is emitting radio beams and foul odors into her apartment through the electric outlets. She believes that he conspires with people on the radio, and that they often refer to her in their broadcasts. She also hears the landlord through the walls discussing his plans to get rid of her, and she believes he follows her around the apartment. The patient does not use alcohol or other substances. Physical examination, cognitive assessment, laboratory findings, and CT are otherwise within normal limits. Which of the following is the most likely diagnosis?

A molecule has a central atom and three identical bonds to other atoms, with no lone pairs. The shape of this molecule is ________.

What is reduced in this reaction? C2H4(g) + 3O2(g) → 2CO2(g) + 2H2O(g)

Hydrogen bonds are a major factor in the structure of ________.

Potassium has ________ valence electron(s).

Which is the most polar bond in the following list?

Iodine is a metal.

One of the principles of geriatric assessment is that:

The shape of an s electron level is ________.

If the electronegativity difference between elements X and Y is 2.1, the bond between the elements X-Y is ________.