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Chapter 3 - Atomic Structure and the Periodic Table Flashcards | StudBud
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Chapter 3 - Atomic Structure and the Periodic Table
Chapter 3 - Atomic Structure and the Periodic Table
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Practice Questions from Chapter 3
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Questions
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1
Element Y has 4 isotopes: 41% at mass 121, 21% at 122, 20% at 123 and the rest at 124 amu. Solve average atomic mass:
123.65
109.75
99.83
122.15
2
The full electron configuration for
37
Rb is:
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s1
1s2 2s2 2p6 3s2 3p6 4s4 3d10 4p6
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d1
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1
3
Which of the following elements is a non-metal?
Calcium
Silicon
Gallium
Lithium
4
I am in Group VIIA. What type of element am I and what is the charge on my common ion?
Halogen: -1
Alkali metal: +1
Alkaline earth metal: +2
Noble gas: 0
5
Electrons have a mass of 1 atomic mass unit:
True
False
6
Which of the following answers places the elements in order of LARGEST to SMALLEST atomic radius?
I still don't get it
S,Ni,Ba,Cl
F, As, Pt, Fr
Cs,Tc,Ga,O
7
My distinguishing electron is located in a d subshell. What am I?
Noble gas
Transition element
Representative Element
Inner Transition Element
8
Which letter of the alphabet refers to an element's atomic number?
A
Z
M
X
9
How many electrons does a chloride ion (Cl
-
) have?
35
17
18
16
10
Which letter of the alphabet refers to an element's atomic mass?
X
Z
M
A
11
What is the maximum number of electrons that can fit in an f subshell?
2
5
14
10
12
Which of the following elements is an alkali metal?
Fluorine
Aluminum
Sodium
Magnesium
13
An atom of element Y is neutral and has an atomic number of 65 and an atomic mass of 131. It has:
66 protons, 65 neutrons, 66 electrons
65 protons, 131 neutrons, 65 electrons
65 protons, 65 neutrons, 131 electrons
65 protons, 66 neutrons, 65 electrons
14
The abbreviated electron configuration for
35
Br (Bromine) is:
[Kr] 4s2 3d10 4p5
[Kr] 5s2 4d10 5p5
[Ar] 4s2 3d10 4p5
[Ar] 4s2 4d10 4p5
