calculate the atomic number of an element . whose mass is 40 , number of neutron is 20. also find the name of element
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Isotopes are named for their mass numbers, for example, carbon-14. The mass number of an isotope is the sum of the number of protons and neutrons in the atomic nucleus. The atomic number is the number of protons. The calcium-40 isotope has a mass number of 40 , and an atomic number of 20 , therefore it has 20 protons.
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Isotopes are named for their mass numbers, for example, carbon-14. The mass number of an isotope is the sum of the number of protons and neutrons in the atomic nucleus. The atomic number is the number of protons. The calcium-40 isotope has a mass number of 40 , and an atomic number of 20 , therefore it has 20 protons.
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