Why Did Rutherford Propose a Model for the Atom with a Very

question 60

Multiple Choice

Why did Rutherford propose a model for the atom with a very small nucleus containing the bulk of the mass and a positive charge?

• A)because a beam of positively charged particles (alpha particles)were partially reflected by a thin gold foil
• B)because a beam of positively charged particles (alpha particles)were able to penetrate by a thin gold foil
• C)because a beam of negatively charged particles (beta particles)were partially reflected by a thin gold foil
• D)because a beam of negatively charged particles (beta particles)were able to penetrate a thin gold foil
• E)because a beam of positively charged particles (alpha particles)were completely reflected by a thin gold foil

---

Definitions:

Standard Deviation

A measure assessing the fluctuation of data from the mean, indicating the degree to which data points are distributed.

Standard Errors

Measures of the variability or spread of sample statistics, indicating the precision with which they estimate corresponding population parameters.

Control Limits

Control limits are statistical boundaries set in process control charts to determine if a process is operating in a state of statistical control or if there are variations that require attention.

Centerline

A reference line drawn on a graph or chart that represents the average, norm, or expected value of a set of data or a process control chart.