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What is the mass number for iron if it's atomic number is 26, it has 28 electrons and 20 neutrons?
John Dalton
protons, different neutrons
Protons and neutrons, nucleus
Mg 2-
46
O-16
Ion
Isotope
If the average atomic mass for Oxygen is 15.9995amu, is there more O-15 or O-16 isotopes that occur naturally?
John Dalton
protons, different neutrons
Protons and neutrons, nucleus
Mg 2-
46
O-16
Ion
Isotope
Who came up with the theory that atoms cannot be created or destroyed and simply change form?
John Dalton
protons, different neutrons
Protons and neutrons, nucleus
Mg 2-
46
O-16
Ion
Isotope
Same number of protons and different number of electrons is best described as a(n)...
John Dalton
protons, different neutrons
Protons and neutrons, nucleus
Mg 2-
46
O-16
Ion
Isotope
Ca-20, Ca -21 and Ca-22 have the same number of....
John Dalton
protons, different neutrons
Protons and neutrons, nucleus
Mg 2-
46
O-16
Ion
Isotope
What two atomic particles have a mass and where are they located?
John Dalton
protons, different neutrons
Protons and neutrons, nucleus
Mg 2-
46
O-16
Ion
Isotope
Which element has more electrons? Mg 2- or Al 2+
John Dalton
protons, different neutrons
Protons and neutrons, nucleus
Mg 2-
46
O-16
Ion
Isotope
Same number of protons and different number of neutrons is best described as a(n)...
John Dalton
protons, different neutrons
Protons and neutrons, nucleus
Mg 2-
46
O-16
Ion
Isotope
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