pg 181-182

Question 1

define electronegativity

Answer 1

the power of an atom in a molecule to attract electrons

Question 2

is the bond dissociation of XY the same as half way between X2 and Y2 and why

Answer 2

no it actually much higher than this because of the ionic character of the bond

Question 3

equation for difference in electronegativity

Answer 3

modulus X^P (X) - X^P(Y) = 0.102(deltaD)^1/2
X^P means electronegativity of the atom in the bracket
delta D is the difference in observed and the expected from half way between X2 and Y2

Question 4

equation for delta D

Answer 4

delta D = D(X-Y) - (D(X-X) + D(Y-Y))/2

Question 5

what are the units of electronegativity after timesing by 0.102

Answer 5

kJmol-1

Question 6

does electronegativity increase or decrease across a period

Answer 6

increases

Question 7

does electronegativity increase or decrease down a group

Answer 7

decrease

Question 8

what is the drawback of this method

Answer 8

doesn’t account for atoms with multiple oxidation states