The atomic number of am element is determined by its number of either electrons or protons, hence here, it is 18. Therefore the element must be argon which the isotope has mass number 38, as there are 18 protons and 20 neutrons.
Chlorine is a non metal element. Mass number of it is 35.
The element with 18 protons and 22 neutrons is argon. Argon has an atomic number of 18, which corresponds to the number of protons, and an atomic mass of 40 (approx.), which is the sum of protons and neutrons.
The atomic number of argon (Z) is 18, which means it has 18 protons. The mass number (A) is 40, so subtracting the atomic number from the mass number gives you the number of neutrons. In this case, 40 - 18 = 22 neutrons.
The element argon has 22 neutrons. It has 18 protons and 18 electrons, giving it an atomic number of 18. The number of neutrons is calculated by subtracting the atomic number from the atomic mass, which is 40 for argon (obtained by rounding the atomic weight to the nearest whole number).
The atomic number of am element is determined by its number of either electrons or protons, hence here, it is 18. Therefore the element must be argon which the isotope has mass number 38, as there are 18 protons and 20 neutrons.
Chlorine is a non metal element. Mass number of it is 35.
The element with 18 protons and 22 neutrons is argon. Argon has an atomic number of 18, which corresponds to the number of protons, and an atomic mass of 40 (approx.), which is the sum of protons and neutrons.
The atomic number of argon (Z) is 18, which means it has 18 protons. The mass number (A) is 40, so subtracting the atomic number from the mass number gives you the number of neutrons. In this case, 40 - 18 = 22 neutrons.
The element argon has 22 neutrons. It has 18 protons and 18 electrons, giving it an atomic number of 18. The number of neutrons is calculated by subtracting the atomic number from the atomic mass, which is 40 for argon (obtained by rounding the atomic weight to the nearest whole number).
The mass number for oxygen-18 is 18. This is calculated by adding together the number of protons and neutrons in the nucleus of an oxygen-18 atom. It is a stable isotope of oxygen with 8 protons and 10 neutrons.
Oxygen is number 8 on the PToE. This means it has 8 protons. We know that the total mass of an atom is the sum of protons and neutrons (electrons are insignificant). Therefore: Protons + Neutrons = Mass If we use algebra and subtract protons to solve for neutrons, the new equation becomes: Neutrons = Mass - Protons Now let's plug in the numbers. Neutrons = 18 - 8 Therefore, an oxygen atom with a mass of 18 contains 10 neutrons.
Fluorine is a non metal element. Mass number of it is 19.
The element with 17 protons is chlorine, as the number of protons determines the element's identity. With 18 neutrons, its atomic mass is approximately 35, which corresponds to the isotope chlorine-35. This isotope is one of the most abundant forms of chlorine found in nature.
ONLY the K+ ion (not element) has 19 protons and 18 electrons.The isotopic ion with 21 neutrons must be K+-40 , the most rare potassium-ion (0.01%) out of three possibles, the other isotopes are: K+-39 (93%) and 7% is K+-41Explanation:39, 40 and 41 are the mass numbers of the 3 naturally occurring potassium isotopes.Keep in mind that:1. an element is always neutrally charged, so the number of protons (positives, + ) equals the number of electrons (negatives, - )2. the number of neutrons depends on the 'mass number' of the one particular isotope of that element and that the number of protons + neutrons is the mass number
The number of neutrons in chlorine is 18 (no of neutrons=atomic mass-no of protons=35-17=18)
the atomic number would be 17 && the mass would be 35