Foundations - Shapes Of Simple Molecules And Ions Flashcards
1
Q
Why is ice less dense than water
A
Hydrogen bonds hold water molecules apart in an open lattice structure. So ice is less dense than water
2
Q
What’s the bond angle of a tetrahedral structure
A
109.5
3
Q
Give name and bond angl of molecule with 3 bond pairs and 1 lone pair
A
Pyramidal , 107 degrees
4
Q
Bond angl of a non linear molecule (2 bp,2lp)
A
104.5
5
Q
Three types of intermolecular forces ?
A
- Hydrogen bonding
- Induced dipole dipole
- Permanent dipole dipole
6
Q
Define weighted mean mass
A
Thé mean taking into account the relative abundancies of the isotopes
