What can you say about a calcium atom by looking at the symbol 44/20 Ca?
a. A calcium atom has 44 neutron s and 20 electrons.
b. A calcium atom has 20 protons and 24 electrons.
c. A calcium atom has 64 protons and 20 neutrons.
d. A calcium atom has 20 protons and 24 neutrons.
e. A calcium atom has 20 protons and 44 neutrons.
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