Rubidium Has Two Naturally Occurring Isotopes

question 17

Multiple Choice

Rubidium has two naturally occurring isotopes.The average mass of Rb is 85.4678 amu.If 72.15% of Rb is found as Rb-85 (84.9117 amu) ,what is the mass of the other isotope?

• A) 0.56 amu
• B) 85.68 amu
• C) 86.91 amu
• D) 86.02 amu
• E) 83.47 amu

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Definitions:

Electroconvulsive Therapy (ECT)

A treatment method for mental illnesses where seizures are intentionally caused using electrical currents to offer symptom relief.

Electrical Currents

The flow of electric charge through a conductor, creating energy that can be used for various purposes, including powering devices.

Seizure

An abrupt and involuntary electrical disruption within the brain that may result in altered behaviors, movements, emotions, and states of consciousness.

Electroconvulsive Therapy (ECT)

A therapeutic procedure where electric shocks are applied to induce seizures in individuals as a way to mitigate mental health issues.