LESSON 8 | Nuclear Chemistry

Question 1

number of protons in nucleus

Answer 1

ATOMIC NUMBER

Question 2

number of protons + number of neutrons

Answer 2

MASS NUMBER

Question 3

Proton

Answer 3

1
H
1

Question 4

Neutron

Answer 4

1
n
0

Question 5

Electron (BETA DECAY / ELECTRON CAPTURE DECAY)

Answer 5

0
e
-1

Question 6

Positron (POSITRON DECAY)

Answer 6

0
e
+1

Question 7

alpha particle (ALPHA DECAY)

Answer 7

4
He
2

Question 8

The sum of protons + neutrons in the products must equal the sum of the protons + neutrons in the reactants.

Answer 8

CONSERVATION OF MASS NUMBER (A)

Question 9

The sum of nuclear charges in the products must equal the sum of nuclear charges in the reactants.

Answer 9

CONSERVATION OF ATOMIC NUMBER (Z)

Question 10

The stability of a nuclide depends on the ratio of n/p, on whether
the numbers of neutrons and protons are odd or even, and
whether either is a magic number arising from nuclear shell
theory.

Answer 10

Nuclear Stability

Question 11

the principal factor that determines whether a nucleus is stable
or not

Answer 11

neutron-to-proton ratio (n/p)

Question 12

MAGIC NUMBERS OF STABILITY

n or p =

Answer 12

2, 8, 20, 28, 50, 82, 1

Question 13

Nuclei with even numbers of both protons and neutrons
are generally more stable than those with odd numbers of
neutrons and proton

Answer 13

TRUE

Question 14

All isotopes of the elements with atomic numbers higher
than 83 are radioactiv

Answer 14

TRUE

Question 15

All isotopes of Tc (technetium) and Pm (promethium) are
radioacti

Answer 15

TRUE

Question 16

the REGION in the plot where stable nuclei are located

Answer 16

BELT OF STABILITY

Question 17

the energy required to break up nucleus into its component protons and neutrons

Answer 17

NUCLEAR BINDING ENERGY

Question 18

This quantity represents the conversion of mass to energy that occurs during an exothermic nuclear reaction.

Answer 18

NUCLEAR BINDING ENERGY

Question 19

The difference between the mass of an atom and the sum of the masses of its protons, neutrons, and electrons.

Answer 19

MASS DEFECT

Question 20

𐤃E = 𐤃m(c^2)

Answer 20

Einstein’s mass-energy equivalence relationship

Question 21

BINDING ENERGY PER NUCLEON

Answer 21

BINDING ENERGY / NUMBER OF NUCLEONS

Question 22

SPONTANEOUS FISSION DECAY

Answer 22

1
2 n
0