Question 11 1 pts If a calcium atom has 20 protons, 21 neutrons, and 20 electrons, what is its atomic number? 40 0 21 O 20 41

asked Jul 27, 2021 185k views

5 votes

Question 11

1 pts
If a calcium atom has 20 protons, 21 neutrons, and 20 electrons, what is its atomic
number?
40
0 21
O 20
41

7.8k points

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5 votes

20, periodic table will reveal to you that calcium has a atomic number of 20.

Niklas Ekman answered Jul 31, 2021

7.7k points

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