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Copy of Isotopes, Ionic Compounds, and Average Atomic Mass (12/13/2023)

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Last updated 11 months ago
15 questions
Note from the author:
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You may use your notebooks and any notes/work papers you want to use.
You may use your notebooks and any notes/work papers you want to use.
Question 1
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Question 2
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Question 3
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Question 4
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Question 5
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Question 6
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Question 7
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Question 8
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Atoms are __________because they have the same number of protons and electrons. However, based on valence electrons, some atoms will easily gain or lose electrons to other atoms in order to achieve noble gas electronic structure. __________ are atoms that have gained or lost electrons.  Atoms that have __________electrons have a positive charge and are called __________.  Atoms that have __________electrons have a negative charge and are called __________.
Question 9
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Question 10
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Question 11
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Question 12
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Question 13
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Question 14
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Question 15
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Different isotopes of the same element have different–
numbers of protons in the nucleus.
locations on the periodic table.
quantities of neutrons.
kinds of electrons in their orbitals.
An isotope of selenium has 34 protons and 46 neutrons. What is the mass number of this isotope?
34
80
46
124
What property is different in different isotopes of the same element?
Their locations on the periodic table
The number of protons
Their mass numbers
The charge of an electron
Element X has 3 naturally occurring isotopes. The first isotope has an atomic mass of 28.0 amu and a natural abundance of 14.0%. The second isotope has an atomic mass of 29.0 amu and a natural abundance of 66.0%. The third isotope has an atomic mass of 27.4 amu. What is the atomic mass of element X?
28.5 amu
27.1 amu
29.1 amu
28.8 amu
Element X has 2 naturally occurring isotopes. Its first isotope has an atomic mass of 40.00 amu and a natural abundance of 97.41%. Its second isotope has an atomic mass of 41.10 amu. What is the atomic mass of element X?
40.28 amu
40.03 amu
40.11 amu
40.77 amu
Which of the following is true about a calcium atom (Mg) and a calcium ion (Mg2+)?
A magnesium ion is smaller and has more electrons.
A magnesium ion is larger and has less electrons.
A magnesium atom is smaller and has less electrons.
A magnesium atom is larger and has more electrons.
Which of the following ions has the largest radius?
Be2+
Mg2+
Ca2+
Sr2+
Which of the following shows the correct Lewis Dot structure for fluorine?
Which of the following is the correct Lewis Dot structure for oxygen?
What is the formula for the ionic compound formed between Ca2+ and O2-?
Ca2O2
CaO
Ca2O
CaO2
What is the formula for the ionic compound formed between Ca2+ and Br1-?
Ca2Br
Ca2Br2
CaBr
CaBr2
What is the formula for the ionic compound formed between K and P (potassium and phosphorous) with the name potassium phosphide ?
K2P
KP
KP3
K3P
What is the formula for sodium oxide?
NaO
NaO2
Na2O2
Na2O
Name this compound: BaCl2
barium dichlorine
barium dichloride
barium chlorine
barium chloride