5. In the table below copy the electronegativities of period 2 elements, then compare each to F by finding their difference in electronegativity (AEN), and their average electronegativity (AvgEN). Li Be F EN AEN (F) for Y-axis

1. Mark the following statements (A-E) as true or false A. The halogen bond dissociation energy decreases in the row Cl2 Br2 I2 because of repulsion between the electrons in the lower shells.  B. The melting points of the dihalogens increase down the group because the interactions between the dihalogen molecules get stronger C. The electronegativity of the halogens decreases down the group because of the decrease of the electron affinity and the increase of the ionization energy.   D. The unusually low bond dissociation energy of the F2 molecule is a direct result of the high electronegativity of fluorine   E.  The high reactivity of fluorine is in part due to the low bond dissociation energy of the F2 molecule

101 107 317DOW 3 Draw a Lewis structure for NH 3 in which the central N Atom obeys the octet rulle, and answer the following questions. O waist auto Ch 0 The number of unshared paies (lone pairs) on the centent Natomis: opxo to slam? The central Natoms forms The central N atoms forms double bonds. single bondsin LUE OCUL

3. Lewis structures of two chemical species are shown below. For each, give (i) the formal charge on each atom and (ii) the overall charge on each species. Structure a Structure b :F :O-CFo H- Atom 1 Atom 2 Atom 3 Atom 4 Atom 5 Хе Oa Ob Fa Fb H Cl Oa Ob Ос రీరేజిి

In Which of the following Componds would lonic bonds be encountered ? that apply) (Circle or underline all NH 3 PC 3 co2 M gO NH y NO 3

Ionizing an H2 molecule to H2+ changes the strength of the bond. Based on thedescription of covalent bonding given previously, do you expect the H¬H bond inH2+ to be weaker or stronger than the H ¬ H bond in H2?

e best Lewis structure for the nitrate ion, NO3. How many single bonds, double bonds, and lone pair of elec entral atom?

Write the Lewis structure for each molecule or ion. Include resonance structures ifnecessary. Then assign the electron geometry, molecular geometry, and bond angles PO43-