Radioactivity

Question 1

alpha decay process particles emitted how?

Answer 1

in continuous (NOT discrete) E spectrum

Question 2

internal conversion decay process

Answer 2

excess nuclear E is passed on to 1 of the orbital e- which is then ejected from the atom

Question 3

B+ decay- Z changes by ?

Answer 3

Z decr by 1

Question 4

B- decay- Z changes by ?

Answer 4

Z incr by 1

Question 5

e- capture- Z changes by?

Answer 5

Z decr by 1

Question 6

gamma decay- Z changes by?

Answer 6

Z stays the same

Question 7

internal conversion- Z changes by?

Answer 7

Z stays the same

Question 8

spontaneous fission competes with?

Answer 8

alpha decay

Question 9

B+ decay emits?

Answer 9

positron & neutrino

Question 10

B+ decay example

Answer 10

N-13 to C-13

Question 11

B+ decay spectrum?

Answer 11

continuous

Question 12

B- decay emits?

Answer 12

e- & antineutrino

Question 13

B- decay example

Answer 13

C0-60 into Ni-60

Question 14

e- capture emits?

Answer 14

neutrino

Question 15

e- capture example

Answer 15

Berillium-7 into Li-7

Question 16

gamma decay emits?

Answer 16

photon

Question 17

gamma decay example

Answer 17

Cs-137 to Ba-137

Question 18

internal conversion emits?

Answer 18

orbital e-

Question 19

spontaneous fission occurs with atomic masses > ?

Answer 19

230U

Question 20

Spontaneous fission emits?

Answer 20

Fission products

Question 21

Energy difference between the two quantum states is called

Answer 21

Decay energy Q

Question 22

Activity of 1 g of Ra

Answer 22

0.988 Ci

Question 23

Example of secular equilibrium

Answer 23

Ra to Rn

Question 24

Radioactivation of nuclides occurs when a parent nuclide is bombarded with

Answer 24

Thermal neutrons

Question 25

Example of nuclide Radioactivation is

Answer 25

Co-60

Question 26

Alpha decay A & Z changes by what

Answer 26

Z decreases by 2

A decreases by 4