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Chemistry, 7/e
Raymond Chang, Williams College

Nuclear Chemistry

Self Assessment A



1

An atom of 206Pb has
A)82 protons, 124 neutrons, and 82 electrons.
B)124 protons, 82 neutrons, and 82 electrons.
C)124 protons, 82 neutrons, and 124 electrons.
D)82 protons, 82 neutrons, 124 electrons.
2

Select the nuclide that completes the following nuclear reaction: 64Cu ----> +b + ?
A)63Zn
B)63Ni
C)64Zn
D)64Ni
E)63Cu
3

Which of the following isotopes is least likely to be stable?
A)40Ca
B)32S
C)30Al
D)55Mn
E)119Sn
4

What is the total binding energy of 12C? [12C atomic mass = 12.000 amu; mass of proton = 1.007825 amu; mass of neutron = 1.008665 amu; 1 kg = 6.022 x 1012amu; 1 J = 1 kg.m/s2]?
A)1.80 x 10-9 J
B)1.48 x 10-11 J
C)3.60 x 10-9 J
D)8.91 x 1015 J
5

If 30% of a certain radioisotope decays in 5.0 years, what is the half-life of the isotope?
A)10.0 yr
B)9.7 yr
C)5.4 yr
D)5.0 yr
E)2.4 yr
6

The half-life of Sr-90 is 29 years. What fraction of the atoms in a sample would remain after 100 years?
A)0.092
B)0.166
C)0.062
D)0.024
E)10.9
7

When an aluminum-27 atom is bombarded with an alpha particle, a neutron and an isotope of phosphorus is produced. What is the mass number of the isotope?
A)28
B)29
C)30
D)31
E)32
8

Complete the following nuclear equation: 9Be(p,a)___.
A)9B
B)10B
C)4Li
D)6Li
9

Which of the following is the least penetrating of the three types of nuclear radiation?
A)alpha
B)beta
C)gamma
10

Gamma-rays and X-rays cause radiation damage when they interact with matter by
A)removing electrons.
B)forming radicals.
C)inducing other nuclear reactions.
D)A and B.
E)A and C.