Tro - Chapter 22 Part B - 22.43 List each of the elements...

22.43 List each of the elements in the nitrogen family and classify it as a metal, metalloid, or a nonmetal.
22.45 (a) Draw a Lewis structure for white phosphorus.
(b) What is the bond angle predicted by VSEPR? (c) Why is white phosphorus so unstable?
22.48 (a) Draw the Lewis structure for water and ammonia.
(b) What are the bond angles in water and ammonia?
(c) What are the intermolecular forces in each of these compounds?
22.49 Dinitrogen trioxide and dinitrogen pentoxide are both acid anhydrides. Write balanced chemical equations
for the reaction of each of these oxides to produce an acid.
22.50 Write balanced chemical equations for the reaction of sodium hydroxide with each of the following.
Assume that all the acid hydrogen atoms react.
(a) phosphoric acid
(b) phosphorous acid
(c) pyrophosphoric acid
(d) tripolyphosphoric acid
(e) trimetaphosphoric acid

22.51 For each of the following compounds give the chemical formula and determine the oxidation of each
element.
(a) nitric acid
(b) methylhydrazine
(c) potassium cyanate
(d) sodium nitrite
(e) hydroxylamine
(f) magnesium nitride
22.53 Draw Lewis structures for each of the following and predict their molecular geometries.
(a) NH
4
+
(b) HNO
2
(c) N
2
O (one N is central)
(d) NO
2
(e) NaNO
3

22.56 For each of the following compounds give the chemical formula and determine the oxidation number of
each element.
(a) phosphine
(b) pyrophosphoric acid
(c) diantimony trioxide
(d) copper(II) hydrogen arsenate
(e) diphosphorus trioxide
22.57 Write a balanced chemical equation for each of the following.