The Element X Has Three Naturally Occurring Isotopes

question 133

Multiple Choice

The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is ________ amu.

• A)17.20
• B)16.90
• C)17.65
• D)17.11
• E)16.9

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Definitions:

Irritable

a state of increased sensitivity and easily becoming annoyed or upset.

Agitated

Describes a state of nervousness or unrest, often displayed through physical movements or verbal expressions.

Neurotransmitter

A chemical substance that transmits nerve impulses across a synapse between neurons.

Mood Disorders

A group of mental health conditions characterized by significant changes in mood, such as depression or bipolar disorder.