Question

ChemActivity 22 Polar, Nonpolar, and lonic Bonds 135 Exercises infog molecules (or ions) as nonpolar, polar ionic. Clasity each of the following bonds as nonpolar, polar, or ionic. C inC O-H in Ho: Si-Cl in Sicla : C-H in benzene (CoHo) Al-O in AlbO, Na-F in NaF: K-c in KCI N-O in NOj H-S in H2s: НН H-N-C-c-o-H C-O in H tot 3. Excluding the inert gases, which element in the periodic table has the largest electronegativity? Which has the smallest electronegativity? Without referring to a table of electronegativities, identify the most electronegative atom in each case: 4. a) Al. P. S. Se. Te b) P. Sr, Cu. As. Pb c) K. Na. P. As. Si 5. Provide an example of a molecule having polar covalent bonds which are more polar than the bonds in NH3. Problems 1. Using grammatically correct English sentences. describe what is meant by the term "electronegativity". Give one example of how electronegativity varies in a systematic way in terms of the periodic table, and provide an explanation of that trend in terms of atomic structure. 2. For each of the following, which has bonds that are the most polar? a) CF4. NF3. OF2 b) OF2. SF2. SeF2

Answer 1

Non relar bou eleetroni beten two atams havinae S Folan bond atons havindifenent elaetroneativites the A. bond formed b't sharrivy a pain nown tno, sa when a Covalent lend is fon med rtuween tuo the mane efcetronegative atom This tye of hond s Calld polar ond lanie, loond el ehaged ions of holds the eppe git atams togethen is Caled Lonie ond ombinin .. Non Pe lann bond Tonic boha 2 Non-Polava hond Polaro hand NO -) :N=O: , Potan loond C. N _ → [C.EN4 pelave eane

2 Polarn bond O-H Polan le S-t alan bond C-H . Polan bond celtて ーラ

Al2O3 → Atst 0 Toie bond S t t s 나나 Sナ Но

Small ex4 franeium (F ーーぅAs L- n .