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20 questions
Subatomic particles with a negative charge
Electrons
Neutrons
Protons
Quarks
The smallest particle of an element.
Element
Molecule
Atom
These are found in the nucleus and have a neutral charge.
proton
electron
neutron
In an atom, the number of protons is equal to the number of ____________.
energy levels
neutrons
neurons
electrons
How many electrons does an Iodine atom have?
53
126
73
179
How many neutrons does an Oxygen atom have?
8
16
24
7.999
What mass does a neutron have?
1 amu
0 amu
-1 amu
+2 amu
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