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Atomic Structure
Atomic Structure
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A review of atomic structure and the periodic table.
Flashcards
15 cards
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Questions
15
Answers
1
To become a negative ion, an atom must ____________.
lose protons
lose electrons
gain electrons
gain protons
2
The sum of the number of protons and neutrons inside the nucleus is called the __________.
atomic number
element number
nucleus number
mass number
3
Elements on the modern periodic table are arranged according to their _________.
atomic numbers
atomic radii
atomic masses
atomic properties
4
Which subatomic particles are located inside the nucelus of an atom?
protons & electrons
electrons & neutrons
electrons & protons
protons & neutrons
5
The number of protons an atomc contains is identified by the ____ ____ on the periodic table.
mass #
atomic #
group #
row #
6
How many total electrons does an oxygen ion (O
-2
) contain?
10
12
8
6
7
Atoms of the same element that have a different number of neutrons are called ____________.
isotopes
indicators
ions
isomers
8
An atom, as shown on the periodic table, is neutral because it contains equal numbers of
neutrons and ions
protons and electrons
protons and neutrons
isotopes and ions
9
How many neutrons does Rb-85 contain?
48.468
48
37
122
10
Which listing below shows the proper charges of the subatomic particles?
p = +1 n = -1 e = 0
p = 0 n = +1 e = -1
p = -1 n = 0 e = +1
p = +1 n = 0 e = -1
11
Valence electrons are located _________.
in the first orbital outside the nucleus
in the outer orbital shell
inside the nucelus
in between the inner and outer shells
12
How many total electrons would a ion of magnesium (Mg
+2
) contain?
12
8
10
14
13
To become a positive ion, an atom must ___________ .
gain electrons
lose protons
lose electrons
gain protons
14
Carbon-13 and Carbon-14 are examples of _______________ for the carbon element.
ions
indicators
isotopes
isomers
15
The average mass of all the isotopes for a given atom is called ___________.
average nuclear mass
average atomic mass
average atomic number
average mass number
