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Chemistry Atomic Theory and Periodic Table Flashcards | StudBud
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Chemistry Atomic Theory and Periodic Table
Chemistry Atomic Theory and Periodic Table
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Parts of atom, Chemical Symbol, Families, Bohr Model, Valence Electrons
Flashcards
35 cards
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Questions
35
Answers
1
Where are the protons, neutrons and electrons located?
Protons and Neutrons in Nucleus. Electrons in the orbitals
Protons, Neutrons, and Electrons are in the nucleus.
Protons and Electrons in Nucleus. Neutrons in the orbitals.
Protons, Electrons and Neutrons in the orbitals.
2
Which of the following is a noble gas?
Hydrogen
Boron
Chlorine
Argon
3
Which orbital has a dumbbell shape?
f
s
d
p
4
What is the charge of a proton, electron and neutron?
+1, -1, 0
-1, +1, 0
0, +1, -1
+1, +1, -1
5
I hope I don't "Bohr" you with this question!
F
S
O
Cl
6
How many neutrons are in the atom?
82
86
124
206
7
Who was the scientist that created the first periodic table?
Democritus
Moseley
Bohr
Mendeleev
8
All of the atoms of the same element have the same
numberof sub-atomic particles
number of protons
mass numbers
number of neutrons
9
Where are the alkaline earth metals located?
Group 17 or 7A
Group 2 or 2A
Group 1 or Group 1A
Group 18 or 8A
10
Where will a new element be placed on the periodic table if it has the properties of metals?
right-most column of the periodic table
left of the zigzag line
noneof the above
right of the zigzag line
11
What is the atomic number?
82
206
124
+4
12
How many valence electrons do fluorine, chlorine, and bromine have?
7
9, 17, 35
17
9
13
Isotope 1: mass # 20 and 25%. Isotope 2: mass # 22, 75%. Calculate average atomic mass.
21.0 amu
42.00 amu
20.5 amu
21.5 amu
14
The nucleus of an atom is
negatively charged and has a low density
positively charged and has a low density
positively charged and has a high density
negatively charged and has a high density
15
Name this neutral element: 1s
2
2s
2
2p
6
3s
2
3p
6
4s
2
3d
10
4p
6
5s
2
4d
10
5p
6
6s
2
4f
14
5d
10
6p
6
7s
1
Radon
Actinium
Francium
Radium
16
Which of the following is a transition metal?
Nickel
Magnesium
Neon
Hydrogen
17
What is the charge of this atom?
206
82
124
+4
18
How many protons are in the atom?
4
206
86
82
19
Which of the following was a part of Dalton’s atomic theory, but revised b/c of new evidence?
Elements of a compound always combine in thesame mass ratio.
Atoms are tiny indivisible particles.
Atoms of diff elements join w/ oneanother in whole # ratios
The number of protons in an atom is its atomicnumber.
20
How many electrons are in the atom?
78
82
4
86
21
Where are the alkali metals located?
Group 18 or 8A
Group 1 or Group 1A
Group 2 or 2A
Group 17 or 7A
22
How many valence electrons does Tellurium have?
5
52
6
16
23
Which neutral element has the following electron configuration: 1s
2
2s
2
2p
6
3s
2
3p
6
4s
2
3d
10
Calcium
Krypton
Ytterbium
Zinc
24
What is the correct
SHORTHAND
OR
NOBLE GAS
CONFIGURATION for Iodine?
1s22s22p63s23p64s23d104p65s24d105p5
[Kr] 5s24d105p5
[Kr] 5s25d105p5
1s22s22p63s23p64s24d104p65s25d105p5
25
Elements of these groups on the periodic table are most resistant to forming compounds?
Group 9
Group 18
Group 1
Group14
26
Which of the following is a metalloid or semi-metal?
Silicon
Hydrogen
Calcium
Aluminum
27
95.0% sulfur-32, 0.76% sulfur-33, and 4.22% sulfur-34. What is the atomic mass of sulfur?
32.09 amu
3.05 amu
32.67 amu
3066.5 amu
28
Which of the following is a halogen?
Carbon
Chlorine
Helium
Hydrogen
29
Lithium and potassium have similar chemical properties b/c atoms of both elements have the same
Number of valence electrons
Number of electron shells
Atomic number
Mass number
30
What is the mass number?
82
124
206
+4
31
Which of the following represents a pair of isotopes?
1H and 3H
16O2- and 32S2
16O2- and 19F1-
40K and 40Ca
32
The scientist who performed the gold foil experiment was
Chadwick
Dalton
J.J.Thompson
Rutherford
33
The number of neutrons in the nucleus can be calculated by
adding the mass number to the number of electrons
adding together the number of electrons and protons
subtracting the number of electrons from the # of protons
subtracting the number of protons from the mass number
34
Which orbital has a sphere shape?
s
p
d
f
35
On the modern Periodic Table, the elements are arranged in order of increasing
atomic number
atomic mass
mass number
oxidation number
