Brandyn+>=O

=b​= = 3.14159265358979323846264338 - that is pi! from memory = =Q. What is an ionic bond?= =A. A ionic bond is the electrostatic forces that hold ions together in ionic compounds.=

Sodium and chlorine bonding ionically to form sodium chloride. Sodium loses its outer electron to give it a [|noble gas] electron configuration, and this electron enters the chlorine atom exothermically. The oppositely charged ions are then attracted to each other, and their bonding releases energy. The net transfer of energy is that energy leaves the atoms, so the reaction is able to take place.

= = = = = = = = = = = = =.= = Q. What is a covalent bond? = =A. A covalent bond is the atoms held together by sharing electrons. = Early concepts in covalent bonding arose from this kind of image of the molecule of [|methane]. Covalent bonding is implied in the [|Lewis structure] that indicates sharing of electrons between atoms.

=Q. 5 differences between ionic and covalent compounds= Lewis structure of water Molecular geometry is bent.
 * ~ =A.= ||~ Covalent Bonds ||~ Ionic Bonds ||~  ||
 * **Occurs between:** || Two non metals || One __ metal __ and one non metal ||  ||
 * **State at room temperature:** || Liquid or gaseous || Solid ||  ||
 * **Shape:** || Definite __ shape __ || Has no definite shape ||  ||
 * **Boiling point:** || Low || High ||  ||
 * **Examples:** || Methane (CH4), Hydro Chloric acid (HCl) || Sodium chloride (NaCl), Sulphuric Acid (H2SO4 ) ||  ||
 * **Melting point:** || low || High ||

= = = = =Lewis structure of Sulfate. Molecular geometry Tetrahedral= = =

=Lewis structure of Phosphorus Trichloride. Molecular geometry Trigonal Pyramidal.=

=Lewis structure of Carbon Tetrafluoride. Molecular geometry Tetrahedral.=

=Lewis structure of Nitrogen Trifluoride. Molecular geometry Tetrahedral.=



=Dichromic Acid - H2Cr2O7_Rule 3 says you change dichromate to dichromic and add acid. I also know that hydrogen is in the chemical formula because it is an acid which makes it the first element.= = = = = =Sulfuric Acid - H2SO4_Rule 3 says you change sulfate to sulfuric and add acid because its an acid then hydrogen is an element in the chemical formula and its the first one.nicole was here.= = = =Trisulfur Nonafluoride - S3F9_ When you have prefix tri- that means there's 3 and when there's a nona- that means there are 9 atoms of the element. I also know that this is a covalent bond because it is a bond between two nonmetals and thats why the prefixs are used.= = = = = =Manganese (III) Fluoride - MnF3_I know this because thers a roman numerial 3 there's 3 valence electron and because that fluorine has a 1 charge you need 3 of them. I also know that this bond is ionic because its a bond between a metal and nonmetal also manganese is a transtion metal that means it needs the roman numerials.=

= =
 * - Well done. Good formulas and names. Good explanations. **