Ununoctium, with 118 protons, has the highest number of protons, but uranium has the most protons of any naturally occurring element with 92. However, ununoctium is a manmade element, as it isn't possible for it to exist in nature.Know More
Uranium is the heaviest natural element. In addition to ununoctium, which was first discovered by a team of Russian chemists in 2006, there are 25 other manmade elements that have more protons and are heavier than uranium.
The discovery of ununoctium was made through the collision of light particles, which resulted in an atom of ununoctium that lasted for less than one-thousandth of a second before breaking apart.Learn more about Atoms & Molecules
Calcium has 20 protons and 20 neutrons. This element is number 20 on the Periodic Table of the Elements and has an atomic weight of 40.078.Full Answer >
A neutral atom containing 12 protons is of the element magnesium. If the atom had a positive or negative charge, it would still be of the element magnesium; however, it would then be classified as an ion.Full Answer >
The chemical element with eight protons and nine neutrons is oxygen, which is denoted by the symbol 17O. It is the least naturally occurring isotope of oxygen.Full Answer >
Collectively, protons and neutrons are called nucleons. Along with electrons, they make up the three subatomic particles in an atom..Full Answer >