[Geddoe]

Consider the four compounds BI3, CI4, NI3, and I2O. Use periodic trends in bond lengths and the
electronegativity table to answer the following questions:
(a) Which molecule is expected to have the longest bonds?
(b) Which molecule is expected to have the most polar bonds?
(c) Which molecule is expected to have the least polar bonds?


here's my thoughts...
Atomic size decreases from B to C to N to O

Electronegativity increases from B to C to N to O

Therefore i believe i can write:


(a) BI3
(b) I2O
(c) I'm unsure...


Any help appreciated...