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How many neutrons in C-14?
8
Which atom has 4 neutrons?
 
Li-7
 
Li-6
 
Li-8
 
they have the same # of neutrons
How many electrons are in an atom with an atomic number of 50?
50
What is the mass number defined as?
 
the number of protons and neutrons
 
the number of protons
 
the number of neutrons
 
the number of protons and electrons
How many neutrons does an atom of the isotope Neon-22 have?
12
How many neutrons in C-14?
8
How many neutrons does the isotope of lithium-8 have?
5
What do these isotopes of carbon all have in common?
 
atomic number and electrons
 
neutrons and mass number
 
atomic number and neutrons
 
protons, atomic number, and mass number
The atomic mass of an element is the weighted average of the masses of all its ______ that occur naturally
 
isotopes
 
protons
 
neutrons
 
electrons
If you want to determine the total number of protons and neutrons in an atom, you can refer to the...
 
mass number
 
atomic weight
 
atomic number
 
ion number
The atomic number represents the number of...
 
protons
 
neutrons
 
electrons
 
ions
Isotopes differ in the number of
 
neutrons
 
protons
 
electrons
For an atom to have an overall negative charge
 
electrons were gained
 
electrons were lost
What subatomic particle can NEVER change?
protons
If Beryllium is electrically neutral, how many electrons does it have?
4
If Arsenic has a charge of -3, then how many electrons does it have?
36
If Aluminum has a charge of +3, how many electrons are present?
10
How many protons does Calcium have?
20
A charge of +2 means you have
 
more protons than electrons
 
more electrons than protons
 
more protons than neutrons
 
more electrons than neutrons
How do you calculate mass number?
protons + neutrons
In uranium - 235 what does 235 represent?
mass number
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