Chapter 7

Question 1

C (velocity of light)

Answer 1

wavelength X velocity

Question 2

Mat Plank

Answer 2

Radiation comes in defined units called quantums

E= h V

E= energy of light

Question 3

Low frequency light

Answer 3

Small quanta

Question 4

High frequency light

Answer 4

Large quanta

Question 5

Wavelength

Answer 5

Distance between 2 adjacent points on a wave h/mv

Question 6

Frequency

Answer 6

Number of wavelengths that pass a point within a fixed unit of time

Question 7

Electromagnetic spectra

Answer 7

Range of frequencies or wavelengths in electromagnetic radiation.

Question 8

Visabal wavelength

Answer 8

400nm-800nm

Question 9

Diffraction

Answer 9

When waves spread out when they encounter an object

Question 10

Angular quantum number (l)

Answer 10

Shape of the orbital

Question 11

l=0

Answer 11

Spherical (s)

Question 12

l=1

Answer 12

Dumb-bell (p)

Question 13

l=2

Answer 13

Variety of shapes (d)

Question 14

Pauli exclusion principle

Answer 14

No two electrons can have identical sets of quantum number (3 may be the same but they would have to have different spins)

Question 15

Hunds rule

Answer 15

Electrons are distributed among the orbitals of a a sub shell in order to yield max number of unpaired electrons

Question 16

Afbau principle

Answer 16

Electron structure is correctly deduced by successive addition of electrons, one at a time

Question 17

when writing electron configuration for charged ions

Answer 17

Begin with neutral atoms

Anions: Subtract electrons

Cations: Add electrons

Question 18

Paramagnitism

Answer 18

Unpaired electrons

Question 19

Dimagnetism

Answer 19

All electrons are paired

Question 20

Principle quantum number (n)

Answer 20

Lower the quantum number, the smaller the energy in the atom

Question 21

Magnetic quantim number (ML)

Answer 21

Distinguishes electrons within a subshell (-l to +l)

Question 22

Spin quantum number (ms)

Answer 22

Two possible spins of each electron

Question 23

Heisenberg’s uncertainty principle

Answer 23

The uncertainty in position and momentum can be no smaller than planck’s constance divided by 4

The more you know about the position, the less you know about the momentum

Question 24

Momentum

Answer 24

Product of mass and speed of a particle