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## how many neutrons does potassium have

Potassium-40 has twenty one neutrons. People rarely look at the world around them in atomic terms, unless perhaps they are scientists. It catches fire when exposed to water. 121. Home. Potassium is element #19, that means K has 19 protons. ----protons -----neutrons --- … It burns with a violet flame. How many protons does mercury have? 2. Homework Help. Hence, number of neutrons is 39 - 19 which is 20. Rounded down, it is 39 for potassium. And how did I know? How many neutrons does mercury have? We know that potassium has an atomic number of 19 and an atomic mass of 39.0983 amu. How many protons and electrons does this ion have? So to get the number of neutrons, you take the average mass of 39 and subtract the number of protons and that leaves you with 20 neutrons. Atomic Mass: 39.0983 amu. Hence, number of neutrons is 40 - … Symbol: K. Atomic Number: 19. 117. Hence the number of neutrons is the atomic mass minus the atomic number, 39 - … Clearly, there are 19. 41 = 19 + # neutrons. Potassium-39 has twenty neutrons. How many protons does platinum have? How many neutrons does platinum have… Potassium-40- It has 19 protons and atomic mass is 40. By plugging in these values, we can therefore deduce that:Atomic Number (19) = 19 ProtonsAtomic Number (39.0983) = 19 Protons + Number of NeutronsNumber of Neutrons = 39.0983 - 19 = 20.0983 ≈ 20 In essence, potassium has 20 neutrons. Figure 2.1.2: How many neutrons do (K) potassium-39 and potassium-40 have, respectively? Chemistry Q&A Library Please help questions! Melting Point: 63.65 °C (336.8 K, 146.57 °F) Boiling Point: 774.0 °C (1047.15 K, 1425.2 °F) Number of Protons/Electrons: 19. How many neutrons does hydrogen have? It is found in all living plant and animal cells. Other examples of isotopes: C-12, C is #6, it … By subtracting the number of protons or electrons from that number (in this case, 19), the total remaining is the number of neutrons. Because potassium has 3 isotopes, then we have to calculate for the different atomic weights of the isotopes: Potassium-39- It has 19 protons and atomic mass is 39. Get the detailed answer: How many neutrons do (K) potassium 39 and potassium 40 have, respectively? The element in question is potassium, the 19 symbolising the atomic number, the number of protons. ----protons __-_electrons -----neutrons 2)An ion of oxygen has a charge of -2. how many protons, neutrons, and electrons does the atom have? Basic Information. Well, how many protons are in the [math]^{40}K[/math] isotope? Personalized courses, with or without credits. 80. Name: Potassium. 1)An ion of potassium has a charge of +1. Number of Neutrons: 20. So for potassium, 19 taken away from 39 leaves 20 neutrons. 78. # neutrons = 22. Mass number = # protons + # neutrons. Switch to. Since potassium has 19 electrons you know that it then has 19 protons because there is no charge change. How many neutrons does potassium have? 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