NeonPlaySword
14.07.2019 •
Physics
According to the periodic table of elements, calcium (ca) has: a- 20 protons and 20 electrons b- 40.08 protons c-20 protons and 20.08 electrons d-20 protons and zero electrons
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Ответ:
A- 20 protons and 20 electrons
Explanation:
Ответ:
oh hi
Explanation: