An Element Has 5 Stable Isotopes

question 66

Multiple Choice

An element has 5 stable isotopes. The mass and percentage of each are: 69.9243 20.52%
71) 9217 27.43%
72) 9234 7.76%
73) 9219 36.54%
75) 9214 7.76%
The element is which of the following?

• A) As
• B) Se
• C) Ge
• D) Ga
• E) Zn

---

Definitions:

Developmental Psychology

A branch of psychology that studies the physical, cognitive, and social changes that occur throughout the lifespan.

Life-Span Development Approach

A perspective that considers the growth, change, and stability in behavior that occurs throughout the entire lifespan, from birth to death.

Longitudinal Method

A research design that follows the same subjects over a period of time, allowing for the observation of changes or developments.

Dealing With Aging Parents

The experience and actions involved in supporting and caring for one’s elderly parents or guardians, often encompassing emotional, logistical, and financial considerations.