Refer to the tables at the back to determine the nature of the bond found in the

Question

Refer to the tables at the back to determine the nature of the bond found in the following compounds (determine the % ionic character). Show all work.
a. SiO2





b. FeS a. SiO2





b. FeS
Table of Electronegativity Group 1 Group 13Group 14 Group 15 Goup h6Goe17 B t N f Ne 20 25 5 40 17 1 Na Mo Goup 3 Group 4 Group 5 Group&Group7; Group Group 9 Group 10 Gro 11Gp12 1S18 21 25- r Nb Mo T Ru Rh Pd Ag Cd In Sn 2222 24 1 1 1 20 22 24 Lanthanide series Nd P?m Sm Eu Gd Tb Dy Ho Er Tm Yb Lu th Pa u NP PH Am Cm8k E Fm Md No Lr 1.2 57

Explanation / Answer

1) % of ionic character = 16x(EN) + 3.5x(EN)² (where EN is electronegativity difference)

so, For SiO2, EN=1.54 then,

  % of ionic character = 16x(1.54) + 3.5x(1.54)² = 32.9%

2) similarily, % of ionic character = 16x(EN) + 3.5x(EN)²

For FeS, EN= 0.75

then, % of ionic character = 16x(.75) + 3.5x(.75)² = 32.9%=14%

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