The element that has 18 neutrons is ARGON...
Wow, why didn't look in a Periodic Table? Is easier ask here??? Actually, 18 is argon's atomic number, and it also has 18 protons and electrons.. but it has 22 neutrons. The number of neutrons = mass number - number of protons. Soo, the answer is Chlorine, 17 protons, 17 electrons and 18 neutrons
Argon is the element with 18 protons. The number of protons of any given element is easily accessible by looking at a period table, usually in the upper portion of the squares that represent each of the elements.
The atomic number is the same as the number of protons in an atom of the element. A periodic table or other reference shows that argon is the element with atomic number 18.
The Atomic Mass number is the sum of the numbers of protons and neutrons, 38 in this instance. Therefore, the only actual correspondence to the conditions specified in the question is the isotope argon-38.
Argon (Ar), the third element in the Noble Gases family.
Argon-20 isotope (0.04 % occurrence) has 20 neutrons, 18 protons and 18 electrons.
Argon-38 (18 protons+20 neutrons)
Argon.
Ca2+ cation
argon
SSS
Radon (Rn) has the most protons of any element in Group 0 (18) with 86 protons. However, if or when Ununoctium is officially confirmed, that will become the element with most protons in that family, with 118 protons.
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.
Silicon is the only element with 18 protons, it form NO cations.
It is only the protons that matter in classifying the element. Sulfur has 16 protons (An atomic number of 16).
Atomic number = Number of protons = 35 - 18 = 17.So the element is chlorine.
Radon (Rn) has the most protons of any element in Group 0 (18) with 86 protons. However, if or when Ununoctium is officially confirmed, that will become the element with most protons in that family, with 118 protons.
Argon
Argon.
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.
i dont know, i hate chemistry it sucks! i wanna no 'if an element has 17 protons, how many electrons are there?' sorry i didnt no the answer
Silicon is the only element with 18 protons, it form NO cations.
It is only the protons that matter in classifying the element. Sulfur has 16 protons (An atomic number of 16).
Atomic number = Number of protons = 35 - 18 = 17.So the element is chlorine.
It is the Noble gas Argon.
The element which has the smallest atomic number has the smallest number of protons. In this case, argon has a proton number of 18 (therefore it has 18 protons in each atom), but nitrogen has fewer protons - it has a proton number of just 7, meaning that it has seven protons per nitrogen atom.
Protons are protons, no matter what element they are in.
The chemical element of chlorine has 18 nuetrons,17 protons and 17 electrons