In Which One of the Following Species Is the Central

question 15

Multiple Choice

In which one of the following species is the central atom (the first atom in the formula) an exception to the octet rule?

• A)NH ₃
• B)NH ₄ ⁺
• C)I ₂
• D)BH ₄ ⁻
• E)SF ₆

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Definitions:

Obsessions

Persistent, unwanted thoughts, images, or urges that cause distress or anxiety.

Compulsions

Repetitive behaviors or mental acts that an individual feels driven to perform in response to an obsession or according to rules that must be applied rigidly.

Desensitization

A technique used to reduce or eliminate an organism's response to a stimulus by repeated exposure to that stimulus.

Implosion

A rapid inward collapse of a structure or material, often used in psychology to refer to a therapeutic technique for confronting fears.