a. electron capture
b. positron decay
c. alpha decay
d. gamma emission
e. beta decay
Atoms with the same atomic number and different mass numbers ____________.
a. are allotropes
b. do not exist
c. are isotopes
d. are isomers
e. are resonance structures
What is emitted in the nuclear transmutation, ?
a. A proton
b. An alpha particle
c. A beta particle
d. A neutron
e.A gamma photon
The reaction shown below is responsible for creating 14C in the atmosphere. What is the bombarding particle?
How many neutrons are emitted when a californium-249 nucleus (Z=98) is bombarded with a nitrogen-15 nucleus to produce a nucleus?
131I has a half-life of 8.04 days. Assuming you start with a 1.53 mg sample of 131I, how many mg will remain after 13.0 days?
What is the rate constant (in min-1) for the decay of this radionuclide?
When two atoms of 2H are fused to form one atom of 4He, the total energy evolved is 3.83 x 10-12 J. What is the total change in mass (in Kg) for this reaction?
(C = 3.00 x 108 m/s)
a. 4.26 x 10-26
b. 4.26 x 10-29
c. 3.45 x 108
d. 1.28 x 10-17
The mass of a proton is 1.00728 amu and that of a neutron is 1.00867 amu. What is the binding energy per nucleon (in J) of a nucleus?
(The mass of a cobalt-60 nucleus is 59.9338 amu.)
a. 2.487 x 10-12
b. 7.009 x 10-14
c. 1.368 x 10-12
d. 9.432 x 10-13
e. 3.039 x 10-12
The mass of a proton is 1.00728 amu and that of a neutron is 1.00867 amu. What is the mass defect (in amu) of a nucleus?
(The mass of a nickel-60 nucleus is 59.9308 amu.)
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