Question 11
1 pts
If a calcium atom has 20 protons, 21 neutrons, and 20 electrons, what is it...
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Chemistry, 21.09.2020 02:01 wolfgirl4762
Question 11
1 pts
If a calcium atom has 20 protons, 21 neutrons, and 20 electrons, what is its atomic
number?
40
0 21
O 20
41
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