Electronegativity Difference Quiz printable pdf download

Name__________________________ (1 pt)

CH 100 (2)

September 22, 2009

110 pts

T A __________________________

25 minutes

Quiz 04

BRIEFLY LOOK OVER THE QUIZ FIRST. DO NOT SPEND TOO MUCH TIME ON ANY ONE QUESTION. ANSWER

EACH OF THE QUESTIONS IN THE SPACE PROVIDED. PAY ATTENTION TO SIGNIFICANT FIGURES. SHOW

YOUR SET UP AND CALCULATIONS FOR CREDIT.

66 pts 1) Complete the following with the correct choice (circle) of supplied word or phrase. (4 pts each)

a) An ionic bond occurs when the ΔEN (Electronegativity Difference) is ____________________________.

b) When the ΔEN (Electronegativity Difference) is less than 1.9 the bond between the two elements will be

_______________________ which occurs when the electrons are ________________________. c) When the

ΔEN (Electronegativity Difference) is less than 0.5 the bond between the two elements will be ____________

which occurs when the electrons are ________________________. d) The least electronegative elements are

found in the __________________ corner of the periodic chart. e) The most electronegative elements are found

in the ____________________ corner of the periodic chart. f) Give the ion expected to form from each of the

following elements:(2 pts ea) Li ______, Sr ______, S ______, N ______ g) Give correct formulas for the

following compounds:(2 pts ea) Lithium Nitride _________________, Strontium sulfide _________________ .

h) Name the following anions (3 pts ea): SO

_________________ , H

________________________

i) Name systematically the following compounds: MnS

_________________________________ , Fe

____________________________ , CrO

___________________________ . j) Write the formulas for the

following compounds: Copper(II) cyanide _____________ , Ammonium Nitrate : ____________________ .

43 pts 2) Write the Lewis Dot structure of each of the following compounds:( 5 pts ea, Atom connectivity is

shown by structure.)

a) CH

b) CF

c) H

C=O

d) H

C=CH

e) HC / CH

f) HC / N

g) HOClO

h) (HO)

SO ( H

)

i) Draw the polarity arrow ( + ÿ ) next to one clearly polar bond in at least 3 different compounds above. (3 pts)

Electronegativity Difference Quiz