The Electron in a Hydrogen Atom Has an Orbital Radius $\times$

question 89

Multiple Choice

The electron in a hydrogen atom has an orbital radius of 0.0500 nm.To avoid being pulled into the nucleus by electrostatic attraction,the electron must have an orbital speed of

• A)7.12 km/s
• B)25.2 km/s
• C)1.02 \(\times\) 10⁶ m/s
• D)2.25 \(\times\) 10⁶ m/s
• E)5.0 \(\times\) 10⁸ m/s

---

Definitions:

Autonomic Changes

Physiological adjustments made by the autonomic nervous system, controlling involuntary body functions in response to physical or psychological stress.

Parasympathetic Nervous System

A division of the autonomic nervous system responsible for rest and digestion, counterbalancing the sympathetic nervous system.

Somatic Nervous System

The part of the peripheral nervous system that handles voluntary control of body movements via skeletal muscles.

Peripheral Nervous System

The part of the nervous system outside the brain and spinal cord, including the nerves and ganglia.