Bonding Unit Final Flashcards
whats the general formula for linear VSEPR shape
AX2
what’s the general formula for trigonal planar VSEPR shape
AX3
how many bond pairs and lone pairs in linear shape
2 bond pairs, 0 lone pairs
how many bond pairs and lone pairs in trigonal planar shape
3 bond pairs, 0 lone pairs
whats the general formula for tetrahedral VSEPR shape
AX4
how many bonding pairs and lone pairs in tetrahedral shape
4 bonding pairs, 0 lone pairs
whats the general formula for triagonal pyramidal VSEPR shape
AX3E
how many bonding pairs and lone pairs in triagonal pyramidal shape
3 bonding pairs, 1 lone pair
how many bonding pairs and lone pairs in bent shape
2 bonding pairs, 2 lone pairs
what’s the general formula for bent VSEPR shape
AX2E2
what’s the general formula for tetrahedral VSEPR shape
AX4
what does a difference less than 0.4 of electronegativity in elements indicate
the bond is slightly polar, but it doesn’t affect the shape of the molecule, so it is considered a nonpolar covalent bond
what does a difference between 0.4 and 1.7 in electronegativity in elements indicate
the bond is polar covalent
what does a difference in electronegativity greater than 1.7 indicate
the bond is ionic
what shape does AX2 make
linear
whats shape does AX3 make
trigonal planar
what shape does AX4 make
tetrahedral
what shape does AX3E make
trigonal pyramidal
what shape does AX2E2 make
bent/angular
4 main characteristics of a molecular compound
low melting points, generally soft, not conductive, not typically soluble
4 main characteristics of ionic compound
high melting and boiling points, brittle, conductive, usually soluble
