The Element Iron (Fe)occurs Naturally as Four Isotopes

question 40

Multiple Choice

The element iron (Fe) occurs naturally as four isotopes.Each of these isotopes has

• A)26 protons.
• B)26 electrons.
• C)a different number of neutrons.
• D)all of the above

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Definitions:

Interval

A distinct, measurable distance between two points or objects, often referring to time or space.

Ratio

A mathematical expression that represents the relationship between two numbers, showing how many times one value contains or is contained within the other.

Interval Reinforcement

A conditioning schedule where a response is rewarded after a variable amount of time has passed, in behavioral psychology.

Schedule of Reinforcement

A strategy in behavioral psychology determining when and how often a response will be reinforced.