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Review- Unit 3- Atomic Theory Flashcards | StudBud
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Review- Unit 3- Atomic Theory
Review- Unit 3- Atomic Theory
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Chemistry- Atomic history and atomic structure
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Questions
15
Answers
1
Which represents the electron configuration for an atom of Boron?
5
2-8
2-3
2
2
Which scientist is referred to as the "founder" of the atomic theory?
Heisenburg
Dalton
JJ Thompson
Rutherford
3
What is the name of the model of the atom shown below?
Plum Pudding Model
Electron Cloud Model
Bohr Model
Cannonball Model
4
Which electron configuration represents an atom of potassium in the excited state?
2-8-8-1
2-8-8-2
2-8-7-1
2-8-7-2
5
How many protons does an atom of calcium have?
20
40
21
6
6
Based on the Bohr model below, identify the element. (red= protons, blue = neutrons)
Beryllium-7
Lithium-7
Beryllium-4
Lithium-6
7
Which of the following is a way to indicate an isotope of sulfur that has a mass # of 32?
3216S
S-32
Sulfur-32
Si-16
8
If an atom has 17 protons and 18 electrons, what is it's net charge?
+1
17
-1
0
9
The Atomic number of an element indicates the number of:
electrons
protons
neutrons
leptons
10
What is the mass number of an atom that contains 9 protons, 10 neutrons, and 9 electrons?
9
18
19
28
11
How many neutrons would an atom of oxygen-18 have?
8
18
9
10
12
Which electron configuration is correct for a sodium ion?
2-8-2
2-8-1
2-8
2-7
13
What is the most abundant isotope of Potassium?
K-20
K-19
K-39
K-40
14
What is the nuclear charge of an atom with a mass number of 23 and an atomic number of 11?
+11
+12
+34
+23
15
Compare the spectra below and use them to identify one of the gases that make up the unknown.
Gas B
Gas A
Gas C
Gas D
