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An atom has 27 protons and 35 neutrons. Its mass number is
calcium; +2
62
protons minus electrons
the same number of protons but more neutrons
protons
0 and in the nucleus
an equal number of protons and electrons
13
The charge and location of neutrons in an atom are, respectively,
calcium; +2
62
protons minus electrons
the same number of protons but more neutrons
protons
0 and in the nucleus
an equal number of protons and electrons
13
A sodium atom has a mass number of 24. How many neutrons does it have? (Hint: figure out the number of protons using the periodic table)
calcium; +2
62
protons minus electrons
the same number of protons but more neutrons
protons
0 and in the nucleus
an equal number of protons and electrons
13
For an atom to be neutral it must have
calcium; +2
62
protons minus electrons
the same number of protons but more neutrons
protons
0 and in the nucleus
an equal number of protons and electrons
13
Compared to the Carbon-12 isotope, the Carbon-14 isotope has
calcium; +2
62
protons minus electrons
the same number of protons but more neutrons
protons
0 and in the nucleus
an equal number of protons and electrons
13
It has 20 protons and 18 electrons. The element is ___ and it has a charge of ___. (hint: use your periodic table)
calcium; +2
62
protons minus electrons
the same number of protons but more neutrons
protons
0 and in the nucleus
an equal number of protons and electrons
13
The charge on an ion can be calculated as
calcium; +2
62
protons minus electrons
the same number of protons but more neutrons
protons
0 and in the nucleus
an equal number of protons and electrons
13
The atomic number identifies the element. The atomic number is the number of ____ in the nucleus of its atoms.
calcium; +2
62
protons minus electrons
the same number of protons but more neutrons
protons
0 and in the nucleus
an equal number of protons and electrons
13
Check it!