Question

atomic number of calcium is 20, what is the number of proton in it

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Answer 1

⭐⭐⭐If Z , the atomic number = 20 , there MUST be 20 nuclear protons, and the element MUST be calcium, with 20 electrons associated with it ⭐⭐⭐

Answer 2

Answer:

Explanation:

Symbol Ca

Atomic Number 20

Atomic Mass 40.078 atomic mass units

Number of Protons 20