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?
A lithium atom has three protons, three neutrons, and three electrons. What is the overall charge on this atom?
An atom contains one proton, one electron, and one neutron. Which two particles are most similar in mass?
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?
Boron occurs naturally as two isotopes. What is the difference between these isotopes?
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