Lesson 3 Flashcards
What is Quantum Mechanics?
A means of describing where electrons are in an atom.
Finish this sentence:
The arrangement of electrons around the nucleus of an element’s atoms _________
determines the reactivity of that element.
Understanding quantum mechanics helps us understand what?
Why certain elements are very reactive, while others are stable, or non-reactive.
The code of quantum mechanics is based on how many quantum numbers?
Four
What is the first quantum number known as?
The principle quantum number
What does the principle quantum number tell us?
How many electron layers or energy levels there are in a particular atom.
What is the second quantum number called?
The Orbital Quantum Number
What does the orbital quantum number tell us?
The shape of the orbit or path the electrons follow.
How many path shapes are there?
Four
What letters represent the different orbital shapes?
s, p, d, f
What is the range of principle quantum numbers?
1 through 7
Name three examples of orbital shapes.
Spherical, Pear shaped, Dumbbell shaped
What is the 3rd Quantum Number?
The Magnetic Quantum Number
What does the magnetic quantum number tell us?
How the p orbits are positioned along the x,y, and z axes.
What is the 4th quantum number?
The Spin Quantum Number
