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1/1/20

[Answer] One isotope of sodium has 11 protons and 7 neutrons. What is the mass number of this isotope?

Answer: 18




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One isotope of sodium has 11 protons and 7 neutrons. What is the mass number of this isotope? One isotope of sodium has 11 protons and 7 neutrons. What is the mass number of this isotope ? 18. What is true about all uranium atoms? ... One way in which elements differ from each other is the structure of the electron cloud in each element's atoms. In an electron cloud an electron that is farther away from the nucleus has ... It determines the atomic mass of atoms. However while calculating the mass number the small contribution of mass from electrons is ignored. Mass number is equal to Number of protons + Number of neutrons Mass number = 11 + 7 = 18 . Hence the correct answer is 18. Since the atomic number of sodium is 11 the atom contains 11 protons and 11 electrons. The number of neutrons is determined by subtracting the atomic number … Wed Jun 19 2019 · Na-25 (the isotope of sodium with a mass of 25) has 11 protons (because it is sodium). Therefore it has 14 neutrons in order for the mass to equal 25 (11 + 14) Na-23 is the stable isotope of sodium with 11 protons and 12 neutrons. Every sodium atom has 11 protons the atomic number of sodium. The isotope with mass number 23 has (23 - 11) or 12 neutrons because the mass number of an isotope is defined as the sum of the ... Tue Jun 26 2012 · E...

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