The mass number of an element is the sum of the number of protons and neutrons in its nucleus. Calcium has 20 protons, so calcium-41 would have 41 - 20 = 21 neutrons.
Niobium has 41 protons, 41 electrons, and the most common isotope, Niobium-93, has 52 neutrons.
Calcium-40 has 20 neutrons. This is calculated by subtracting the atomic number (which is 20 for calcium) from the atomic mass of the isotope, which in this case is 40.
In a typical calcium ion, there are 20 neutrons. This is because the atomic number of calcium is 20, indicating the number of protons in the nucleus, and the number of neutrons is usually the same in a neutral atom of calcium.
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.
A neutral atom of calcium with a mass number of 41 would have 20 protons since calcium has an atomic number of 20. To find the number of neutrons, you subtract the atomic number from the mass number, so there would be 21 neutrons in this atom.
The mass number of an element is the sum of the number of protons and neutrons in its nucleus. Calcium has 20 protons, so calcium-41 would have 41 - 20 = 21 neutrons.
20 neutrons
The most stable isotope, calcium-40 has 20 neutrons.
This isotope don't exist.Added:That's right, the element with atom number 41 has 41 protons and should be :Naturally occurring niobium which is composed of one stable isotope, 41Nb(93)This means that the mass number (= total of protons AND neutrons) is 93!, so this isotope of Nb has 93-41 = 52 neutrons!As of 2003, at least 32 radioisotopes have also been synthesized, ranging in atomic mass from 81 to 113, so they have 40 to 82 neutrons. This makes the amount of 20 neutrons erronous.However: if the question were 'inverted' to:"What element has 21 (not 41) protons and 20 neutrons" instead, there is a possible more realistic question.The answer to this is: scandium, 21Sc(41) This unstable isotope of Sc, with mass number 41, has 21 protons and 20 neutrons.
Niobium has 41 protons, 41 electrons, and the most common isotope, Niobium-93, has 52 neutrons.
Potassium-41 has 19 electrons and protons and 22 neutrons.
calcium has 20 neutrons and electrons
Calcium has 20 protons and electrons and a variable number of neutrons, depending on the isotope.
Calcium-40 has 20 neutrons. This is calculated by subtracting the atomic number (which is 20 for calcium) from the atomic mass of the isotope, which in this case is 40.
The number of neutrons is the difference between the Atomic Mass of an isotope and the atomic number of the element; each isotope of calcium has a different number of neutrons. See the link below for calcium isotopes.
There are 20 neutrons in an atom of Calcium.