How many protons, neutrons, and electrons does a neutral atom of calcium have?
20 of each.
To determine the number of protons, neutrons, and electrons in a neutral atom of calcium, we need to know the atomic number and the atomic mass of calcium.
1. Find the atomic number: The atomic number represents the number of protons in an atom. For calcium, the atomic number is 20.
2. Find the atomic mass: The atomic mass represents the sum of protons and neutrons in an atom. For calcium, the atomic mass is approximately 40.08 g/mol.
3. Determine the number of protons: Since the atomic number of calcium is 20, we know that a neutral calcium atom has 20 protons.
4. Determine the number of neutrons: To find the number of neutrons, subtract the atomic number (protons) from the atomic mass. In this case, 40.08 - 20 = 20. Thus, a neutral calcium atom has 20 neutrons.
5. Determine the number of electrons: In a neutral atom, the number of electrons is equal to the number of protons. Therefore, a neutral calcium atom also has 20 electrons.
In summary, a neutral atom of calcium has 20 protons, 20 neutrons, and 20 electrons.