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Atomic Structure
Atomic Structure
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Review of atomic strucutre and isotopes
Flashcards
10 cards
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Practice quiz
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Questions
10
Answers
1
The inner most electron shell can hold ___ electrons while the 2nd and 3rd can hold ___ each
1,8
2,6
8,8
2, 8
2
Isotopes of an element have a different number of
Protons
Nuceli
Electrons
Neutrons
3
An atom with an atomic number of 25 and a mass number of 57 contains how many neutrons?
32
30
25
24
4
Which group on the periodic table is nonmetals that are very un-reactive with other elements
Nobel Gases
Alkaline Earth Metals
Halogens
Alkali Metals
5
Which statement is true about all atoms?
They all have the same number of protons and neutrons
They are mostly empty space
They are solid spheres
They are all metals
6
What holds all the protons together in the nucleus of an atom?
The fact that protons all have a positive charge
nothing
The negatively charged electrons outside the nucleus
The neutrally charged neutrons
7
Sodium-24 has how many neutrons?
12
13
14
11
8
Which best describes atoms of the same element?
same number of protons
same number of neutrons
same mass
same number of electrons and neutrons
9
The abundance of
85
Rb is 72.2% and the abundance of
87
Rb is 27.8% what's rubidium's atomic mass
8.56
85.56
87.99
1484
10
Which model represents to most current theory of atomic structure?
Plum Pudding Model
Quantum (Electron Cloud) Model
Bohr Model
Rutherford Model
