Electronegativity and the Continuum of Chemical Bonding (LC 2027) (Leaving Cert Chemistry): Flashcards
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Electronegativity definition
Electronegativity definition
Relative attraction of atom for shared in covalent bond
Who developed electronegativity scale in 1930s?
Who developed electronegativity scale in 1930s?
Linus Pauling
Highest electronegativity value and element
Highest electronegativity value and element
Fluorine: 3.98
Meaning of (delta) symbol in bonding
Meaning of (delta) symbol in bonding
Partial charge
When does pure covalent bonding occur?
When does pure covalent bonding occur?
Identical atoms or electronegativity difference
Characteristic of polar covalent bonds
Characteristic of polar covalent bonds
Unequal sharing; one end , other end
Electronegativity difference 0-0.5 gives what bond?
Electronegativity difference 0-0.5 gives what bond?
Pure covalent (negligible polarity)
Electronegativity difference 0.5-1.7 gives what bond?
Electronegativity difference 0.5-1.7 gives what bond?
Polar covalent
Electronegativity difference gives what bonding?
Electronegativity difference gives what bonding?
Ionic bonding
Two conditions for a molecule to be polar
Two conditions for a molecule to be polar
Polar covalent bonds + asymmetrical shape
Why is polar overall?
Why is polar overall?
Has polar bonds and is V-shaped (asymmetrical)
Charged rod near polar liquid stream does what?
Charged rod near polar liquid stream does what?
Stream bends towards rod
How do microwaves cook food using polarity?
How do microwaves cook food using polarity?
Polar molecules rotate, creating friction and heat