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gcse science -chemistry question 10 of 15 the atomic number of calcium is 20 how many protons does if have? enter your answer as a

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GCSE Science -Chemistry Question 10 of 15 The atomic number of calcium is 20 How many protons does if have? Enter your answer as a number

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Answer

20

Explanation

## Step 1:The atomic number of an element represents the number of protons in the nucleus of an atom of that element. ## Step 2:Given that the atomic number of calcium is 20, it means that there are 20 protons in an atom of calcium.