Shapes Of Molecules Flashcards
1
Q
BF3 has 3 electron pairs, what is its shape and bond angle?
A
Trigonal planar
120
2
Q
H20 has 2 lone pairs, what is its shape and bond angle?
A
Bent
104.5
3
Q
PF3 has 4 electron pairs but one lone pair. What is its shape and bond angle?
A
Trigonal pyramidal, 107
One normal, one lines, one wedge
4
Q
How do you predict the shape of a molecule?
A
Work out central atom Work out no of electrons in outer shell Add 1 for every atom its bonded to Divide by 2 to find electron pairs Compare electron pairs to bonds
5
Q
BeCl2 has 2 electron pairs what is its shape and bond angle?
A
Linear
180
