Q: What is the approx number of neutrons in potassium?

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Potassium is element number 19 and so 39-19 = 20 neutrons

I'm assuming you are referring to Potassium (K)-40. All Potassium has 19 protons, though there are many stable isotopes. Potassium-40 has 21 neutrons.

Potassium have th atomic number of 19 this means it has 19 protons in its "core" and in atoms the number of electrons are always equal to the number of protons hence also 19. the number of neutrons however vary dependent on witch potassium isotope it is the average for potassium is however 20 in potassium 39

The mass number, the number that follows the hyphen at the end of an element name, is the sum of the atomic number of the element and the number of neutrons in each atom of the isotope specified by mass number. The atomic number of potassium is 19; therefore, potassium-39 contains (39 - 19) or 20 neutrons.

Potassium (K) Has the same number of electrons as protons therefore it has 19 electrons. To find the number of neutrons you take the mass of the element minus the number of protons so 39-19=20. so there are 20 neutrons in potassium.

Related questions

By subtracting 19 (atomic number of Potassium) from 40. You should come out with 21, which is the number of neutrons in potassium-40

the answer is 21. because you do 40-19

by thinking

Potassium is element number 19 and so 39-19 = 20 neutrons

The number of neutrons in any element depends on the isotope of the element you are referring to. Potassium has 24 isotopes, ranging from 32K to 55K. The most stable natural isotope is 39K, which would have 20 neutrons.

I'm assuming you are referring to Potassium (K)-40. All Potassium has 19 protons, though there are many stable isotopes. Potassium-40 has 21 neutrons.

39K has 20 neutrons and 41K has 22 neutrons.

From the periodic table, potassium has an atomic number of 19. This means that potassium atoms have 19 protons in their nuclei. In a neutral atom, the number of protons equals the number of electrons. Therefore, potassium atoms have 19 electrons. Mass number is the sum of protons and neutrons in the nucleus of an isotope. If you know the mass number and number of protons, subtract the number of protons from the mass number. In the case of potassium-31, the mass number is 31. So, subtract 19 from 31 and you get 12, which is the number of neutrons. So the atoms of potassium-31 has 19 protons, 19 neutrons, and 12 neutrons.

Potassium has the atomic number 19; that means it has 19 protons. The number of neutrons - as with any element - depends on the specific isotope. For more details, check the Wikipedia article on "Isotopes of potassium".

The mass number of Potassium is 39 which means it has 20 neutrons.

Potassium have th atomic number of 19 this means it has 19 protons in its "core" and in atoms the number of electrons are always equal to the number of protons hence also 19. the number of neutrons however vary dependent on witch potassium isotope it is the average for potassium is however 20 in potassium 39

Answer: 20 Details: mass number - atomic number = number of neutrons.