Answer: With atomic number 20, calcium atoms have 20 positive protons, and the ion has only 18 electrons, which means the net charge is +2. Calcium ions are essential for muscle contractions, nerve impulses, and bone maintenance.
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Answer:
18 electrons
Explanation:
thats because it loses two to become a cation
i think it would be Earth's albedo hope this helps
Answer:d
whats the answer
C
a mountain range will form
