How Many Neutrons Are There in an Atom of Lead

question 96

Multiple Choice

How many neutrons are there in an atom of lead whose mass number is 208?

• A) 82
• B) 126
• C) 208
• D) 290
• E) none of them

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Definitions:

Vertebra

A bone in the spine that forms part of the vertebral column.

Vertebral Arch

The posterior part of a vertebra that encircles the spinal canal, composed of pedicles and laminae.

Spinous Process

A bony projection off the posterior (back) of each vertebra, which muscles and ligaments attach to, playing a role in movement and stability of the spine.

Odontoid Process

A peg-like projection from the second cervical vertebra around which the first cervical vertebra rotates, enabling head rotation.