Electronegativity Flashcards
Are weaker bonds more or less reactive?
Weaker bonds are more reactive. They react to form stronger bonds with more stable products.
Do fuels with more weak bonds produce more or less energy than those with fewer weak bonds?
Fuels with weaker bonds produce more energy since their bonds are easier to break.
What is electronegativity?
The ability of a bonded atom to attract shared electrons.
What is a polar covalent bond?
One where electrons are shared unequally.
What causes a bond to be polar?
Differences in electronegativity between the atoms creates partially positive and partially negative poles.
What is a nonpolar covalent bond?
One where the electrons are shared equally.
In what direction does electronegativity increase on the Periodic Table?
Up and to the right.
As atoms get bigger, are they more or less electronegative? Why?
Bigger atoms are less electronegative because the nucleus is further from the shared electron pair, meaning there is less attractive nuclear force.
An electronegativity difference of 0 - 0.4 indicates what type of bond?
Mostly covalent (electrons are shared more equally)
An electronegativity difference of 0.5 - 1.6 indicates what type of bond?
Polar covalent
An electronegativity difference greater that 1.7 indicates what type of bond?
Mostly ionic
Is a bond ever 100% ionic?
No, there is always some electron sharing. Ionic vs covalent is a spectrum.
