PPT 2A Part 2

Question 1

Atoms with the same atomic number but
different mass numbers

Answer 1

Isotopes

Question 2

Atoms of different elements with the same mass number but different atomic numbers

Answer 2

Isobars

Question 3

Atoms of different elements with the same number of neutrons but different mass numbers

Answer 3

Isotones

Question 4

Atoms of different elements which have the same value of n - p

Answer 4

Isodiaphers

Question 5

Who

Quantum mechanical model of the atom

Answer 5

1. Louie de Broglie
2. Erwin Schrodinger
3. Werner Karl Heisenberg

Question 6

Explains the manner of existence of electrons and their behavior in atoms

Answer 6

Quantum mechanical model of the atom

Question 7

Helps us understand and predict the properties of atoms that are directly related to the behavior of the electrons

Answer 7

Quantum mechanical model of the atom

Question 8

Orbital is AKA

Answer 8

Electron shell or Energy level

Question 9

QUANTUM NUMBERS
* Location and energy of e- in an atom is determined by a set of ___ that describes different atomic ___

Answer 9

• 4 QN
• Orbitals

Question 10

QN

• Main energy level occupied by the electron
• Integral values of 1, 2, 3 and so forth

Answer 10

Principal quantum number, n

Question 11

Principal QN

Higher n, larger ___, e- has higher ___ and thus ___ from the nucleus

Answer 11

Orbital; energy; farther

Question 12

QN

Defines the shape of the orbital or the type of subshell of an electron

Answer 12

Azimuthal quantum number (Angular momentum QN), l

Question 13

QN

• Integral values from 0, 1, 2… (n-1)
• Generally designated by the letters s, p, d and f

Answer 13

Azimuthal quantum number (Angular momentum QN), l

Question 14

Azimuthal QN Shapes

s (sharp)

Answer 14

Spherical

Question 15

Azimuthal QN Shapes

p (principal)

Answer 15

Dumbbell

Question 16

Azimuthal QN Shapes

d (diffuse)

Answer 16

Clover

Question 17

Azimuthal QN Shapes

f (fundamental)

Answer 17

Complex

Question 18

QN

Describes the orientation of the orbital in space (spatial arrangement)

Answer 18

Magnetic quantum number, ml

Question 20

QN

Integral numbers between –l to l including 0

Answer 20

Magnetic quantum number, ml

Question 21

QN

Either + 1⁄2 or – 1⁄2

Answer 21

Electron spin number, ms

Question 22

QN

Denotes the direction of the spin of an electron that affects the direction of the magnetic field generated

Answer 22

Electron spin number, ms

Question 23

Direction of spin (CCW or CW)

Arrow is up

Answer 23

Counterclockwise

Question 24

Direction of spin (CCW or CW)

Arrow is down

Answer 24

Clockwise

Question 25

The manner in which the electrons are distributed among the various orbitals of an atom

Answer 25

Electron configuration

Question 26

“Aufbauen”

Answer 26

“to build”

Question 27

Filling up energy sublevels with electrons starts with the lowest energy level available

Answer 27

Aufbau principle

Question 28

No two electrons can have the same four quantum numbers

Answer 28

Pauli’s exclusion principle

Question 29

An orbital can hold at most two electrons only if the electrons have opposite spins

Answer 29

Pauli’s exclusion principle

Question 30

The lowest energy arrangement of electrons in a subshell is obtained by putting electrons into separate orbitals of the subshell with the same spin before pairing electrons

Answer 30

Hund’s rule

Question 31

• Used to show how the orbitals of a subshell are occupied by electrons
• Represented by a circle/box/line

Answer 31

Orbital diagram

Question 32

A substance with unpaired electrons is?

Answer 32

Paramagnetic

Question 33

A substance composed only of paired electrons is?

Answer 33

Diamagnetic