When potassium fluoride forms from a potassium atom and a fluorine atom?
An electron is transferred from the potassium atom to the fluorine atom
What happens to an atom of fluorine when it forms an ionic bond in which it has the same electron configuration as neon?
When a fluorine atom has seven electrons in its outer shell is it an ion with a plus or minus charge?
Replacement (or displacement) in Chemistry is when a molecule or atom is replaced by a more reactive molecule or atom, within a compound. This is most commonly seen in the halogens (group 7 elements). For example, if you react potassium chloride with fluorine, you get potassium fluoride and chlorine: KCl + F --> KF + Cl Fluorine is more reactive than chlorine, and so it displaces/replaces chlorine in the potassium compound. B
First of all fluoride and fluorine ("u" in the spelling) are two different things. A fluoride ion is derived from fluorine by stripping one electron from a fluorine molecule (or atom). Looks like your curious about fluoridation of water. Don't get lost in the unfounded science. Fluoride also come in two forms. Organic and inorganic. Inorganic is not harmful to humans and that is what is in toothpaste (and other oral products) and in some…
The bond between the metal potassium (K) and the nonmetal fluorine (F) is ionic. During the formation of the ionic compound potassium fluoride (KF), the potassium atom loses an electron and becomes a positively charged ion, and the fluorine atom gains the electron and becomes a negatively charged ion. The electrostatic attraction between the two oppositely charged ions is the ionic bond. In general, a metal and a nonmetal will form an ionic bond.
Fluoride on its own is not a substance, it is an ion. Specifically it is a fluorine atom with an extra electron, giving it a negative charge. To make a complete substance it must be paired with a positive ion. The "fluoride" in toothpaste is usually sodium fluoride, a compound of sodium and fluorine. Fluorine on its own is an element.
A fluoride ion is a fluorine atom with one extra electron that it has borrowed from some other atom. It turns out that every fluorine atom has 9 protons, and all fluorine ions, which are F- ions, will have 9 protons as well. Proton count does not vary among atoms of a given element, regardless of whether or not they are neutral atoms or ions of any kind.