covalent bonds Flashcards
a covalent bond is created by the ______ of
______ pairs between two atoms. A neutral group of atom joined by covalent bonds is known as a _____
sharing of electrons
molecules
when atoms in covalent bond share bond equally, a __________ covalent bond is formed
nonpolar
when there is a large difference in _________________ between the two atoms in a covalent bond, a ____ covalent bond is formed
Electronegativity
polar
EN : > 1.7
mostly ionic
EN :0.4-1.7
polar covalent
EN: <0.4
mostly covalent
EN: 0
nonpolar
how do you find the bond character?
subtract smaller electronegativity
from bigger
single units are called
molecules
definition:
bond formed from sharing of electrons
form from what type of atoms?
nonmetal + nonmetal
what happens to electrons? (covalent)
shared between nonmetals
how are bonds held together in covalent bond?
positive protons are attracted to negative electrons
strength of covalent bond
somewhat weak
hardness of covalent
usually soft (gas or liquid)
