Question
The ____ states that electrons will fill the lower energy levels before moving to higher energy orbitals.
Answer
The Aufbau Principle states that electrons will fill the lower energy levels before moving to higher energy orbitals.
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In element notation, A is the ____
In element notation, Z is the ____
____ is the weighted average of the masses of an element's isotopes .
Atomic weight is ____.
The ____ states that an atom is mostly empty space, with electrons orbiting a fixed, positively charged nucleus.
The Rutherford Model states that ____.