When a Lithium Atom Is Made from a Helium Atom

question 23

Multiple Choice

When a lithium atom is made from a helium atom by adding a proton (and neutron) to the nucleus and an electron outside, the electron goes into an n = 2, ℓ=0 state rather than an n = 1, ℓ=0 state.This is an indication that electrons:

• A)obey the Pauli exclusion principle
• B)obey the minimum energy principle
• C)undergo the Zeeman effect
• D)are diffracted
• E)and protons are interchangeable

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Definitions:

Coefficient Of Determination

A statistical measure, often denoted as R^2, that represents the proportion of the variance in the dependent variable predictable from the independent variable(s).

Positive Value

A numerical quantity greater than zero, indicating a magnitude or amount in the absence of direction or dimension.

Error Term

The part of an observation in regression analysis that the model does not explain, often considered as random noise.

Expected Value

The predicted average of a random variable, calculated by multiplying each possible outcome by its probability and summing the results.