The mass number of Fe2+ is 56. How many neutrons are there in a single Fe2+ atom?
Carbon-12 and carbon-13 are isotopes of carbon. Which of the following statements is correct?
Which two particles are found in the nucleus of an atom?
The table below gives some characteristics of element Y.Characteristics of element YValuesMass number11Number of neutrons in a single atom6Average atomic mass (grams/mole)10.81What is the identity of element Y?
A nitride ion has 7 protons, 8 neutrons, and 10 electrons. What is the overall charge on this ion?
The table below gives the atomic mass and relative abundance values for the three isotopes of element M.Relative abundance (%)Atomic mass (amu)78.9923.985010.0024.985811.0125.9826What is the average atomic mass (in amu) of element M?
Boron occurs naturally as two isotopes. What is the difference between these isotopes?
The table below gives the numbers of protons, electrons, and neutrons in four atoms.AtomNumber of protonsNumber of neutronsNumber of electrons198929983991049109Based on the table, which atom has a charge of –1?
An atom contains one proton, one electron, and one neutron. Which two particles are most similar in mass?
A lithium atom has three protons, three neutrons, and three electrons. What is the overall charge on this atom?
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