While the Maximum Number of Electrons Required to Fill the Outermost

question 19

Multiple Choice

While the maximum number of electrons required to fill the outermost shell of an atom varies depending on the size of the atom,almost all of the smaller atoms (atomic numbers 2-20) are considered stable (nonreactive) when they contain ________ electron(s) in the outermost shell.

• A) 1
• B) 2
• C) 8
• D) 16

---

Definitions:

Cephalocaudal Principle

Principle that development proceeds in a head-to-tail direction, that is, that upper parts of the body develop before lower parts of the trunk.

Proximodistal Principle

Principle that development proceeds from within to without, that is, that parts of the body near the center develop before the extremities.

Proximodistal

Refers to the pattern of development that moves from the center or core of the body outward towards the extremities.

Cephalocaudal

A pattern of growth and development in which progress is made from the head downward, typically observed in infants.