All atoms of the same element have the same number of protons in the nucleus and consequently have the same atomic number. All atoms of the same neutral element have the same number of electrons as well.Continue Reading
Atoms of an element usually have the same number of neutrons as protons. Atoms of the same element that have a different number of neutrons are called isotopes. Isotopes have the same atomic number but different atomic masses.
Atoms of an element share that element's chemical and physical properties, such as boiling point, melting point and stability.
An element is the simplest form of matter and cannot be broken down further by chemical means. There are 118 known elements, arranged in the periodic table in order of atomic number. Of these elements, only the first 98 are naturally occurring. The other elements have been produced artificially or as a result of nuclear reactions.
Atoms of the same element that are arranged in different molecular formations are called allotropes. Allotropes may have different physical appearances and different characteristics such as electrical conductivity. For example, a diamond, coal and soot all are allotropes of carbon. The carbon atoms in a diamond have a tetrahedral structure around each.Learn more about Atoms & Molecules
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.Full Answer >
The main distinguishing factor between the various chemical elements is the number of protons in an element's nucleus, which is known as the element's atomic number. The atomic number also corresponds to the number of electrons the element has because elements have equal numbers of protons and electrons.Full Answer >
To find the mass number of an element or isotope, add the neutrons and protons in one atom. Hydrogen is just one element with multiple isotopes occurring naturally, appearing in atomic form with just one proton (mass number 1), and two isotopes, one with one neutron and another with two.Full Answer >
Mercury has 80 protons, which is also the element's atomic number. Mercury has an atomic weight of 200.59 amu, and its chemical symbol is Hg.Full Answer >