Web19 de mar. de 2016 · By looking at the periodic table, you will see that Fluorine has 9 protons. Since the number of electrons equal the number of protons, Fluorine has 9 electrons as well. Meanwhile, it's mass number of 19, minus 10 neutrons, gives you 9 protons or electrons. Hence, the atom would be Fluorine. WebMass number, A=19Atomic number, Z=9Number of neutrons= A−Z=19−9=10. Solve any question of Structure of Atom with:-. Patterns of problems.

Which element has 19 neutrons? - Answers

WebAn atom has an atomic number of 9 and a mass number of 19. What are its numbers of protons, neutrons and electrons? Protons = 10, neutrons = 19, electrons = 10 Protons = 9, neutrons = 10,... Web18 de oct. de 2008 · Number of neutrons = Mass number - atomic number = 39 - 19 = 20 Which Chemical element has the symbol k? Potassium and it has 19 electrons and protons and 20 neutrons. Potassium and it... christopher veal

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Web16 de jun. de 2024 · 19 protons, 20 neutrons and 18 electrons. Explanation: The atomic number gives the number of protons 19 p = 19 The atomic mass is the sum of the protons and neutrons p + n = 39 p = 19 put p into the equation and solve for n the neutrons. 19 +n = 39 Subtract 19 from both sides 19 −19 + n = 39 −19 n = 20 WebFluorine has an atomic number of 9 and a mass number of 19. How many electrons are needed to complete the valence shell of a fluorine atom? number of protons and … Web22 de mar. de 2024 · The mass number (represented by the letter A) is defined as the total number of protons and neutrons in an atom. Consider the table below, which shows … geyser wifi timer