An atom becomes a positive ion when it loses an electron, which is a negatively charged subatomic particle. Only metal atoms can become positive ions.Know More
An atom's net charge is the sum of its positively charged particles (protons) and its negatively charged particles (electrons). If protons and electrons are present in equal numbers, then the atom has no charge and is considered neutral.
A positive ion is an atom that has lost an electron, giving it more protons than electrons. A negative ion is an atom that has gained an electron, giving it more electrons than protons.
Metal atoms are the only atoms that form positive ions due to their ability to lose an electron. Non-metal atoms form negative ions because they readily accept an additional electron. Compounds made up of positive and negative ions are called ionic compounds, and they have incredibly strong bonds due to the oppositely charged ions attracting each other. Ionic compounds have high melting and boiling points due to the strength of their bonds.
Positive ions are known as cations, and negative ions are known as anions. These terms were coined by chemist Michael Faraday, who observed that some substances traveled toward the cathode and some toward the anode in his experimental devices. He had no knowledge of ions; it has since been recognized that he was observing the movement of ions, and his nomenclature is still used.Learn more about Atoms & Molecules
With an atomic number of 4, beryllium has four electrons: two electron shells surround the atom's nucleus and two electrons in each shell. Beryllium is a rigid metal with an atomic mass of 9.0122. It is lightweight but strong and hard. It has a grayish-white color, but beryl crystals also form green emeralds and the sky-blue aquamarine gemstones.Full Answer >
The electron cloud model is a theory of the atom that comports with the modern understanding of quantum mechanics. The model dispenses with the classical "orbiting electrons" depiction and envisions electrons as holding indeterminate positions in a diffuse cloud around the nucleus of the atom.Full Answer >
An excited state electron configuration refers to an atom with electrons at a higher energy level than is necessary. An excited state differs from a ground state, which is when all of the atom's electrons are in the their lowest possible orbital.Full Answer >
A cation is formed when an atom loses electrons. An atom that loses electrons loses negative charge; therefore, it becomes positively charged. These atoms have a low affinity or attraction for electrons and are called electropositive atoms.Full Answer >