Electronegativity (Grade 11 NSC Matric Physical Sciences): Flashcards
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Electronegativity definition
Electronegativity definition
Power of an atom to attract electrons towards itself
Element with highest electronegativity value
Element with highest electronegativity value
Fluorine (4.0)
Bond type: electronegativity diff = 0
Bond type: electronegativity diff = 0
Non-polar covalent
Bond type: electronegativity diff 0-1
Bond type: electronegativity diff 0-1
Weak polar covalent
Bond type: electronegativity diff 1.1-2
Bond type: electronegativity diff 1.1-2
Strong polar covalent
Bond type: electronegativity diff >2.1
Bond type: electronegativity diff >2.1
Ionic
Symbols for partial charges (negative, positive)
Symbols for partial charges (negative, positive)
- and +
What causes partial charges in polar covalent bonds
What causes partial charges in polar covalent bonds
Unequal sharing/distribution of electrons
Requirements for a polar molecule
Requirements for a polar molecule
Polar bonds AND molecule not symmetrical
Why symmetrical molecules with polar bonds are non-polar
Why symmetrical molecules with polar bonds are non-polar
Polar bonds cancel each other out