Unit 6 Bonding >

Dipole moment

________- A separation of the charge around the molecule into a more positive area and a more negative area /A separation of charge within the bond (uneven electron sharing)

lone pair

Tip: In a Lewis structure, if there is a(n) ________, it is ALWAYS polar.

Na Cl

Sodium chloride- ________- <base term for chloride (cation /metal first, nonmetal /anion second) In ionic compounds, we use the simplest ratio of elements to represent their formula, for example, sodium chlorides ratio is 1 to 1 so In** Covalent bonds,** elements share electrons to attain octets.

Electrons

________ are transferred from metals to nonmetals, causing the metal to become a cation and the nonmetal into an anion.

Δ+

(________) is a partial positive charge, while (δ)- is a partial negative charge.

NON POLAR

If a structure is symmetric, it is ________.