Question

calcium atomic mass number​

Answer 1

Answer:

The number of protons determines an element's atomic number and is used to distinguish one element from another. ... Together, the number of protons and the number of neutrons determine an element's mass number.

Explanation:

40.078 u

Answer 2

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Calcium atomic number $\longrightarrow$ 20

Calcium Atomic Mass $\longrightarrow$ 40