Write the formulas for these binary molecular compounds.
a. phosphorus pentachloride
b. iodine heptafluoride
c. chlorine trifluoride
d. iodine dioxide

Question

Write the formulas for these binary molecular compounds. 
a. phosphorus pentachloride
b. iodine heptafluoride
c. chlorine trifluoride
d. iodine dioxide

rogue · Answer

A. The element phosphorous just has an atomic symbol of P. The prefix penta tells you that there are 5 Chlorine atoms. So molecule is...$$PCl_5$$B. The atomic symbol for Iodine is just I. Hepta means 7, so there are 7 fluorine. In this molecule, all 7 of iodine's valence electrons are being shared. $$IF_7$$C. -Tri means 3, so there are 3 fluorine. $$ClF_3$$D. -Di means 2. Iodine dioxide is just like carbon dioxide, CO2. $$IO_2$$

anonymous · Answer

thanks dude

rogue · Answer

Can someone verify if iodine dioxide is IO2 by the way. Its a strange molecule...

xishem · Answer

Well, Google shows that it's correct. It's usually written as...$$OIO$$But that's beside the point.