Atomic Theory, orbitals and intro to bonding Flashcards
covalent bonding
atoms can share more than two electrons
What happens when more electrons are shared?
the more electrons shared, the shorter the bond
Typically each bond is made from what?
from the contribution of one electron from each atom
polar covalent
one atom needs e- more creating unequal sharing
non-polar covalent
both atoms have similar e- needs creating equal sharing
1
mono
2
di
3
tri
4
tetra
5
penta
6
hexa
7
hepta
8
octa
9
nona
10
deca
How are covalent compounds named and how do we write their formulas?
The prefix of the number of electrons shared is written in the formula. The prefix is always listed before the element and the second element always ends with ide
If a bond is ionic…
difference in electronegativity is more than 2 elements; will take the electron
If a bond is covalent…
difference in electronegativity is less than 1.79; atoms share electrons
If a bond is nonpolar covalent…
difference in electronegativity is 0-0.39
ionic bonding
the complete transfer of electrons
polar covalent is…
UNEQUAL sharing
nonpolar covalent is…
EQUAL sharing
Metal and Nonmetal bonding togther=
ionic bonding
nonmetal and nonmental bonding together=
covalent bonding
If polar covalent…
difference in electronegativity is 0.4-1.79
molecules are…
electrically neutral
an uneven distribution of negative charge=
a polar molecule
an evenly distributed of negative charge=
a non polar molecule
