There are 20 neutrons in an average atom of potassium.This is found by subtracting the atomic number (number of protons) from the Atomic Mass (measured in AMU, which is the approximate weight of a proton or neutron). Rounded to the nearest whole number, this will give you an estimate of how many neutrons are in an average atom of potassium. However, sometimes an atom has more or less neutrons than this number. That is why this number is an approximation instead of an exact value.
To work out the number of neutrons in an atom, we have to look at it's symbol o the Periodic Table. All elements on the periodic table have two numbers. The top one is the atomic mass. This is the number of protons + neutrons. The lower is atomic number, which is the number of protons alone. Therefore, to get the number of neutrons we have to take away the atomic mass from the atomic number. In Potassium (K) this is 39 - 19 = 20. Therefore, there are 20 neutrons in an atom of potassium.
Potassium (K) typically has 19 neutrons in its nucleus. Potassium-40 is a radioactive isotope with 21 neutrons in its nucleus.
Potassium has 20 neutrons in its most abundant isotope, potassium-39.
Potassium-41 contains 20 neutrons. It is calculated by subtracting the atomic number from the mass number, which in this case is 41-19 = 22 neutrons.
Potassium with a mass number of 39 has 20 neutrons. The mass number of an element is the sum of its protons and neutrons. Since the atomic number of potassium is 19 (number of protons), the number of neutrons can be calculated by subtracting the atomic number from the mass number.
An atom of potassium has 19 protons, 19 electrons, and typically 20 neutrons.
Potassium (K) typically has 19 neutrons in its nucleus. Potassium-40 is a radioactive isotope with 21 neutrons in its nucleus.
Potassium has 20 neutrons in its most abundant isotope, potassium-39.
Potassium has 19 protons, 19 electrons, and usually 20 neutrons.
Potassium-39 and potassium-41 are isotopes of potassium, meaning they have the same number of protons but different numbers of neutrons. Potassium-39 has 20 neutrons, while potassium-41 has 22 neutrons. This difference in neutron number results in different atomic masses for the two isotopes.
the answer is 21. because you do 40-19
By subtracting 19 (atomic number of Potassium) from 40. You should come out with 21, which is the number of neutrons in potassium-40
Potassium-41 contains 20 neutrons. It is calculated by subtracting the atomic number from the mass number, which in this case is 41-19 = 22 neutrons.
by thinking
Potassium
The nucleus of potassium is the central core of the potassium atom consisting of protons and neutrons. It has 19 protons, making it the atomic number of potassium, and the number of neutrons can vary depending on the isotope of potassium.
Potassium with a mass number of 39 has 20 neutrons. The mass number of an element is the sum of its protons and neutrons. Since the atomic number of potassium is 19 (number of protons), the number of neutrons can be calculated by subtracting the atomic number from the mass number.
An atom of potassium has 19 protons, 19 electrons, and typically 20 neutrons.