Apr 27, 2014 · When a neutral atom gains one or more electrons, it now has more electrons than protons. As a result, the atom has a negative charge. An atom with a negative charge is called a negative ion. A negative ion is represented by the element ’ s symbol followed by a superscript negative sign (−). Figure 6 shows how fluorine (F) becomes a fluoride ...
Sep 23, 2007 · Atom B ,who took an extra electron, now has a -1 charge and will be attracted to atom A that lost the electron and got a +1 charge. Opposites attract.
Electrons are negatively charged particles, and in a neutral atom, the number of electrons is the same as the number of protons. They are much smaller than protons but have the same strength charge. Because the charge of electrons is opposite in sign than protons, the two types of particles attract each other, and this force, known as the ...
The fact that protons and neutrons are very similar was understood almost immediately. But the fact that protons and neutrons have a measurable size, comparable in size to a nucleus (about 100,000 times smaller in radius than a typical atom), wasn’t learned til 1954.
Every atom of an element has the same number of electrons and protons. A neutral atom has equal numbers of electrons and protons. The atomic number Z gives the number of protons in the nucleus of an atom. In a neutral atom this is also equal to the number of electrons.
Sulfur has more energy levels than oxygen so it is larger than oxygen. Explain why a ca+2 ion is smaller than an atom of Ca while an F-1 ion is larger than an atom of F. Ca+2 ion has fewer electrons than a Ca atom.
Protons and neutrons have approximately the same mass, but they are both much more massive than electrons (approximately 2,000 times as massive as an electron). The positive charge on a proton is equal in magnitude to the negative charge on an electron. As a result, a neutral atom must have an equal number of protons and electrons.
It should be noted that carbon is about in the middle of the electronegativity range, and is slightly more electronegative than hydrogen. When two different atoms are bonded covalently, the shared electrons are attracted to the more electronegative atom of the bond, resulting in a shift of electron density toward the more electronegative atom.