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WorksheetsAtomic Structure and the Periodic Table
Total questions: 15
Worksheet time: 4hrs 45mins
Which of the following is not apart of Dalton's Atomic Theory?
Atoms are indivisible
Atoms are characterized by their atomic number
The atoms of an element have identical properties
The atoms of an element differ from those of other elements
Which of the following factors is important in determining the stability of an isotope?
Size of atomic radius
Number of protons
Number of protons to electrons
Ratio of protons to neutrons
Atomic Mass (Amu) Abundance %
204 Pb 1.4
206 Pb 24.1
207Pb 22.1
208 Pb 52.4
Based on the data above what is the relative atomic mass of lead is...
206.24 amu
207.24 amu
207.30 amu
208.30 amu
A
B
C
D
What is the average relative atomic mass of bromine, given the following isotopic masses and abundances?
79Br 50.5% 81Br 49.5%
80.01
79.99
79.90
78.99
A radioactive element, M of mass number A, and atomic number Z, undergoes β decay followed by α decay. The final element, N, will be
A
N
Z-1
A-4
N
Z
A-4
N
Z+1
A-4
N
Z-1
Which of the following types of radiation is composed of particles with a charge and mass identical to that of an electron?
Alpha particles
Beta particles
Gamma rays
X-rays
The explanation for how a beta particle is produced in the nucleus of a radioisotope and then ejected involves the conversion (in a complex series of steps) of a
proton converted to neutron and electron
neutron converted to a proton and electron
proton converted to electron
neutron converted to an electron
The mass number remains constant during which of the following modes of decay?
Alpha
Beta
Gamma
none of the above
Which of the following statements concerning subatomic particles is correct?
Four fundamental types exist, all of which are charged
Four fundamental types exist, two of which are charged.
Three fundamental types exist, none of which are charged.
Three fundamental types exist, two of which are charged.
Which of the following statements correctly characterizes the subatomic particle called a neutron?
Its mass is slightly less than that of a proton.
It has a positive charge
It is one of two types of subatomic particles found in an atom’s nucleus
It accounts for almost all of the mass of an atom
An atom contains 26 protons, 30 neutrons and 26 electrons. The atomic number and mass number for this atom are, respectively,
30 and 26.
26 and 30
26 and 56.
30 and 56.
The quantity “A + Z” gives the number of
protons in an atom
neutrons in an atomic nucleus
nucleons in an atom
subatomic particles in an atom
Isotopes of a given element
have the same mass number but different numbers of protons.
have different mass numbers but identical numbers of protons.
have the same atomic number but different chemical properties.
have the same mass number but different chemical properties.
Two naturally occurring isotopes exist for the hypothetical element dippium. 30.0% of dippium atoms have a relative mass of 6.0 amu and 70.0% a relative mass of 8.0 amu. What is the atomic mass of dippium?
6.8 amu
7.2 amu
7.4 amu
14.0 amu
