chapter 6

Names of nonmetals in covalent compounds need what?

Why do nonmetals in covalent compounds need prefixes?

mono=

Di=

Tri=

tetra=

penta=

hexa=

hepta=

octa=

nona

deca=

atoms of metals and nonmetals become more stable by forming

electrons are not tranferred from one atom to another, but are shared between atoms of nonmetals to achieve stability. in what?

when nonmetal atoms share electrons, the resulting bond is?

simplest covalent molecule is

when a shared pair of electrons is written as two dots or a single line between the atomic symbols

bonding pair

written between atoms

lone pairs

electron in a molecule that are not shared in a bond but complete the octetfor an element

a piar of electron shared between two atoms

the number of electrons that an atom shares and the number of covalent bonds it forms are usually equal to

sharing of two pairs of electrons

sharing of 3 pairs of electrons

atoms most likely to form multiple bonds

atoms most likely to NOT form multiple bonds

when two or more electron dot fromulas can be written they are called

to predict the 3D shape  of a moleule use the

the shape of a molecule depends on what

the shape of a molecule that has two bonded atoms and no lone pair

the shape of a molecule with three bonded atoms and no lone pair

the arrangement of three electron groups as far apart as possibe and has bond angles of 120 degrees

the shape of a molecule with two bonded atoms and one lone pair or two lone pairs

shape of a molecule with 4 bonded atoms

the shape of a molecule that has three bonded atoms and one lone pair

the ability of an atom to attract bonding electrons to itself

have a high electronegativity

highest electronegativity

lowest electronegativity

tend to have higher electronegativity values because the valence electrons they share are closer to their nuclei

covalent bond bwtween atoms with identical or very similar elctronegativity is

when electrons are shared unequally in a covalent bond

when the shared electrons are attracted to the more electronegative atom which makes it parially negative and the other end becomes partially positive

when a polar covalent bond has separations of positive and negative charges or two poles

depends on the separation of charges

covalent bonds can be

molecules can be polar or nonpolar depending on

affects it chemical reactivity and physical properties including solubility and melting and boiling points

one end of the moleule is more negative than the other end in what

depends on the type of atoms and the shape of the electron groups around the central atom