Question

3. Of the molecules listed, which does not have a dipole moment? (Hint: Draw them out as Lewis structures with proper geometry to see the bonds and lone pairs) C) CO D) BF3 A) HC B) NBR3 4. For the elements Rb, F, and O, the order of increasing electronegativity is: A) Rb < F<O B) O<F Rb C)F< Rb<O D) The correct answer is not listed. 5.A polar covalent bond is a bond in which (3): C) Atoms have slightly differing electronegativity A) Atoms have greatly differing electronegativity B) Atoms have equal electronegativity D) Atoms have an electrostatic attraction

Answer 1

3)

so CO2 and BF3 do not have a dipole moment

Page: Date A) HCI chare dipole H CI + > Cancel indisidual dipole moment not hore Ao clo thei each ipele morment mek N (Net dipolemoment) 1 BY . BF2 individual dinole omeot ancel each othet hare dipele moment net 4o donot

4)

correct order not listed

correct order for increasing the electronegativity is Rb < O < F

5)

a polar covalent bond is a bond in which atoms having slightly differing in electronegativity.