Font size
WorksheetsQUIZ REVIEW Valence e-, Ions, Isotopes
Total questions: 50
Worksheet time: 34mins
What does the Bohr Model represent?
The structure of molecules
The structure of the Solar System
The structure of an atom
The structure of East Hills
The nucleus contains
electrons
all subatomic particles
protons
protons and neutrons
What is the atomic number of this atom?
2
4
6
8
What is the mass number of this atom?
(Recall mass number = protons + neutrons added together)
1
3
4
7
How many electrons can go in the first energy level?
2
8
18
32
How many electrons can go in the second (2nd) energy level?
2
8
18
32
What is a particle with negative (–) charge, outside nucleus?
proton
neutron
quark
electron
How many electrons can go in the third (3rd) energy level?
2
8
18
32
The innermost energy level has a maximum of how many electrons?
1
2
6
8
What is a valence electron?
Electrons in the first energy level
Electrons in the second energy level
Electrons in the outermost level
Total number of electrons
How many valence electrons?
2
4
6
8
How many valence electrons?
2
5
6
8
How many valence electrons?
2
3
4
5
Name this element.
(Look at a periodic table. Remember PROTON number identifies an element)
Neon
Magnesium
Sodium
Manganese
Name this element.
Argon
Chlorine
Aluminum
Boron
What is this element?
(blue=protons, yellow=neutrons, red=electrons)
Beryllium (atomic #4)
Boron (atomic #5)
Carbon (atomic #6)
Nitrogen (atomic #7)
Which element is this?
Nickel
Neon
Sodium
Nitrogen
How many valence electrons?
2
8
10
can't tell
How many valence electrons?
2
4
6
10
Remember to use your Periodic Table of Elements to help you identify which Bohr Model is pictured...
oxygen
sulfur
nitrogen
boron
How many valence electrons?
2
6
8
can't tell
How many valence electrons?
4
5
9
2
In ascending order, the maximum number of electrons each energy level (or shell) can hold is
2, 8, 8, 32
2, 8, 18, 32
2, 6, 8, 32
2, 3, 4, 5
An ion is
Also a compound
An atom that has gained or lost an electron
An atom that has only gained electrons
An atom where the number of protons=electrons
Cations
Gain electrons, has an overall positive charge
Lose electrons, has an overall positive charge
Lose electrons, has an overall negative charge
Gain electrons, has an overall negative charge
Anions
Gain electrons, has an overall positive charge
Lose electrons, has an overall positive charge
Lose electrons, has an overall negative charge
Gain electrons, has an overall negative charge
A Beryllium atom that has lost 2 electrons would look like
Be2+
B2-
B2+
Be2-
The cation Rb+ has
Had nothing happen to it
Gained 1 electron
Lost 1 electron
Become negative
The number of electrons in the electron configuration of Nitrogen is
0, 2, 5
N, 2, 5
7
2, 5
Describe the anion S2-
Silicon that gained 2 electrons
Sulfur that gained 2 electrons
Selenium that gained 2 electrons
Strontium that gained 2 electrons
How do these isotopes of carbon vary?
neutrons & mass number
atomic number and neutrons
atomic number and electrons
protons, atomic number, and mass number
Use your periodic table to find sodium, Na. Look at it's group number and then predict what charge Na will become?
+2
+1
-1
-2
Group 17 (or 7A) elements always have ions with a charge of
+1
+2
-1
-2
Use periodic table to find O, oxygen. Find it's group number. What charge will an Oxygen ion have?
+1
-1
+2
-2
Find Li, lithium in the periodic table. Find it's group number.
Lithium wants to...
gain 7 e- to become stable
gain 1 e- to become stable
lose 7 e- to become stable
lose 1 e- to become stable
Make sure you get enough Potassium in your diet!
Huh?
K
I <3 bananas
Sure
Four isotopes of lead include lead-204, lead-206, lead-207, and lead-208. The average atomic mass of lead is 207.2. Which isotope of lead is likely to be the most abundant?
204
206
207
208
What is the average mass of this element?
Find Li, lithium in the periodic table. Find it's group number.
Lithium will become..
Li7-
Li1-
Li7+
Li1+
