Chemistry IMFs, polarity, shapes

Linear

2 atoms bonded to central atom, 0 lone pairs, nonpolar when symmetrical and polar when not

Trigonal planar

3 atoms bonded to central atom, 0 lone pairs, nonpolar when symmetrical and polar when not

Trigonal Pyramidal

3 atoms bonded to central atom, 1 lone pair, always polar

Bent

2 atoms bonded to central atom, 1-2 lone pairs, always polar

Tetrahedral

4 atoms bonded to central atom, 0 lone pairs, nonpolar when symmetrical and polar when not

These are always polar

Bent and trigonal pyramid

These are nonpolar when bonded atoms are symmetrical and polar when not

Linear, planar, tetrahedral

Name each of the IMFs corresponding to the bond type

Nonpolar molecules have dispersion (all do), polar have dipole-dipole, hydrogen when bonded with F O or N has hydrogen bonds. Hydrogen bonds also have dipole dipole and dispersion

State the 3 electronegativity differences that determine polar/nonpolar/ionic

If difference is >1.7 then ionic, if 0-0.39 then nonpolar, if 0.4-1.7 then polar

IMFs from weakest to strongest

dispersion, dipole dipole, hydrogen bond