Unit 3

Question 1

In 1926, Australian physicist_____ _______ derived a mathematical equation that treated the hydrogen atom’s electron as a wave and describes the probability of finding an electron in a certain region of space called an _____.

Answer 1

Edwin Schrodinger
Orbital

Question 2

What is the quantum-mechanical model of the atom?

Answer 2

The atomic model in which electrons are treated as waves

Question 3

What is the quantum-mechanical model of an atom also called?

Answer 3

electron cloud model

Question 4

How does the quantum-mechanical model describe the location of the electrons in an atom?

Answer 4

limits an electrons energy to certain values and makes no attempt to describe the electron path around the nucleus

Question 5

a three-dimensional region around the nucleus in which an electron can be found is called an _______.

Answer 5

atomic orbital

Question 6

s orbitals are _______ in shape and p orbitals are _____ shaped.

Answer 6

spherical
dumbbell

Question 7

According to the quantum mechanical model, within each energy level the electrons occupy_____ _____.

Answer 7

energy sublevels

Question 8

you can only put ___ electrons in an atomic orbital.

Answer 8

2

Question 9

draw the quantum mechanical model of an atom with s orbitals and p orbitals.