Question

the compound f₂o has two lone pairs on the central oxygen atom. whats the structure of an f₂o molecule? is this compound polar or non - polar?
a) bent or angular, polar
b) bent or angular, non - polar
c) trigonal planar, polar
d) trigonal planar, non - polar
question 8 (5 points)
the possible products of a double displacement reaction in aqueous solution are (nh₄)₂s and nano₃. which of these possible products will form as a solid in this reaction?
a) neither compound will form as a solid.
b) (nh₄)₂s

Explanation:

• For \(F_2O\):
• The central \(O\) atom has \(2\) bonding pairs (with \(F\) atoms) and \(2\) lone pairs. According to VSEPR theory, this gives a bent or angular molecular geometry.
• The \(F - O\) bonds are polar (since \(F\) and \(O\) have different electronegativities), and due to the bent shape, the bond dipoles do not cancel out. So, \(F_2O\) is polar.
• For the double - displacement reaction products \((NH_4)_2S\) and \(NaNO_3\):
• Ammonium salts (\((NH_4)^+\) compounds) and nitrate salts (\(NO_3^-\) compounds) are generally soluble in water. So, neither \((NH_4)_2S\) nor \(NaNO_3\) will form a solid precipitate.

Answer:

A. Bent or angular, polar; A. Neither compound will form as a solid.