quantum numbers

Question 1

principle QN

Answer 1

n - size of orbital

Question 2

angular momentum QN

Answer 2

l - shape (n=1, l= 1, 0, n=2, l=2,1,0) s-0 p-1d-2f-3)

Question 3

same vale of n= shell

Answer 3

same value of n & l= subshell

Question 4

magnetic QN

Answer 4

m (l) orientation of orbital in space (2l+1) -l….0…l (number of orbitals in a subshell with a particular l value)

Question 5

of orbitals in a shell

Answer 5

n squared

Question 6

of subshells in a shell

Answer 6

n

Question 7

electron spin QN

Answer 7

m (s) describes electron occupying orbital, tiny magnets spinning on axis (+1/2 or -1/2),

Question 8

2 electrons with opposite s[pins in same orbital

Answer 8

paired

Question 9

s subshells contains 1 orbital

Answer 9

s orbital

Question 10

as principle QN increases

Answer 10

sphere/radius increase

Question 11

radial probability distribution

Answer 11

where electron spends most of its time

Question 12

probability drops to zero (node)

Answer 12

in between maxima

Question 13

p orbitals

Answer 13

n ≥ 2, l can be 1 and m (l) can be -1,0,1 (each p subshell contains 3 orbitals p(x) p(y) p (z)- letters indicate axis oriented on, same in size shape and E)

Question 14

d orbitals n ≥3

Answer 14

l=2, m(l)=-2,-1,0,1,2 3d (x squared- y squared)

Question 15

E of single electronincreases

Answer 15

n increases

Question 16

shells have same E regardless of subshells

Answer 16

1s

Question 17

pauli exclusion principle

Answer 17

no 2 electrons can have exact same 4 QN (so M(s) must be different)- max of 2 electrons occupies orbital (electron configurations)

Question 18

aufbau principle

Answer 18

build periodic table 1s,2s,2p,3s,3p,4s,3d,4p,5s,4d,5p,6s,4f,5d,6p,7s,5f,6d,7p

Question 19

degenerate

Answer 19

when orbitals are of equal E (i.e. 2p)

Question 20

hund’s rule

Answer 20

in orbitals of = E # of electrons w/ same spin is maximized ( pair last)

Question 21

paired electrons

Answer 21

dimagnetic (repelled by magnetic field)

Question 22

unpaired electrons(1 or more)

Answer 22

paramagnetic- have greater mass w/ magnet on in scale1

Question 23

1/2 filled f and d orbitals exhibit more

Answer 23

stability.