Log in
Sign up for FREE
arrow_back
Library

Isotopes, Ionic Compounds, and Average Atomic Mass

star
star
star
star
star
Last updated 11 months ago
17 questions
Note from the author:
Required
2
Required
2
Required
2
Required
3
Required
3
Required
2
Required
2
Required
6
Required
2
Required
2
Required
2
Required
2
Required
2
Required
1
Required
2
Required
1
Required
1
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
1.

Question 2
2.

Question 3
3.

Question 4
4.

Question 5
5.

Question 6
6.

Question 7
7.

Question 8
8.
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
9.

Question 10
10.

Question 11
11.

Question 12
12.

Question 13
13.

Question 14
14.

Question 15
15.

Question 16
16.

Question 17
17.

Other Answer Choices:
Different isotopes of the same element have different–
kinds of electrons in their orbitals.
quantities of neutrons.
locations on the periodic table.
numbers of protons in the nucleus.
An isotope of selenium has 34 protons and 46 neutrons. What is the mass number of this isotope?
34
46
124
80
What property is different in different isotopes of the same element?
The number of protons
Their locations on the periodic table
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
28.8 amu
27.1 amu
29.1 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?
40.77 amu
40.28 amu
40.03 amu
40.11 amu
Which of the following is true about a calcium atom (Mg) and a calcium ion (Mg2+)?
A magnesium atom is smaller and has less electrons.
A magnesium atom is larger and has more electrons.
A magnesium ion is smaller and has more electrons.
A magnesium ion is larger and has less 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-?
Ca2O
Ca2O2
CaO
CaO2
What is the formula for the ionic compound formed between Ca2+ and Br1-?
CaBr
CaBr2
Ca2Br
Ca2Br2
What is the formula for the ionic compound formed between K and P (potassium and phosphorous) with the name potassium phosphide ?
K3P
K2P
KP3
KP
What is the formula for sodium oxide?
NaO
NaO2
Na2O2
Na2O
Name this compound: BaCl2
barium dichlorine
barium dichloride
barium chlorine
barium chloride
Ions conduct electricity in solution but not in the solid state. Which statement best explains this observation?
Ions in solution exchange electrons with the solvent.
The electrons of ions in the solid state don’t move at all.