Chapter One: Atomic Structure

Question 1

What does the quantum mechanical model posit?

Answer 1

Electrons do not travel in defined orbits but rather are localized in orbitals

Question 2

What does the Heisenburg uncertainty principle state?

Answer 2

It’s impossible to know an electron’s position and it’s momentum at exactly the same time

Question 3

The principle quantum number describes:

Answer 3

The average energy of a shell

Question 4

The principle quantum number (n) can take one which values?

Answer 4

Any positive integer

Question 5

The maximum number of electrons within a shell can be calculated using:

Answer 5

2n^2

Question 6

The azimuthal quantum number describes:

Answer 6

the shape and number of subshells within a given principal energy level

Question 7

The maximum number of electrons within a subshell = ?

Answer 7

4L+2

Question 8

The azimuthal/angular momentum quantum number (l) can take on which values?

Answer 8

For a given n, L can equal 0 - (n-1)

Question 9

The magnetic quantum number describes:

Answer 9

The particular orbital within a subshell where an electron is most likely to be found at a given moment in time

Question 10

The magnetic quantum number (m^L) can take on which values?

Answer 10

The integers between -L and +L, including 0

Question 11

The spin quantum number (m^s) indicates what?

Answer 11

The spin orientation of an electron in an orbital

Question 12

What values can the spin quantum number take on?

Answer 12

+1/2 and -1/2

Question 13

1s(^2)2s(^2)2p(^6)3s(^2) is an example of the _____________ _________ of magnesium

Answer 13

Electron configuration

Question 14

Materials with unpaired electrons that align with magnetic fields are called?

Answer 14

Paramagnetic materials

Question 15

Materials that have all paired electrons, which cannot easily be realigned are called?

Answer 15

Diamagnetic materials