Answer
a. False.
b. False.
c. True.
d. False.
Work Step by Step
a. False. It is possible to satisfy the octet rule for all atoms in XeF2. Xenon (Xe) can have an expanded octet and accommodate ten electrons around it, which fulfills the octet rule for fluorine (F).
b. False. The existence of SF4 does not necessarily imply the existence of OF4. Oxygen (O) and sulfur (S) may be in the same group (Group 16, or chalcogens), but they have different sizes and electronegativities, leading to different chemical behavior.
c. True. NO1 (nitric oxide) has an unpaired electron, making it a radical. The presence of the unpaired electron in NO1 makes the bond stronger compared to NO2 (nitrogen dioxide), which has a stable double bond.
d. False. Both oxygen-oxygen bonds in ozone (O3) are equivalent in strength. Ozone has a resonance structure in which the double bond between oxygen atoms can shift, leading to equal bond strength in both oxygen-oxygen bonds.
