electronegativity and bond polarity

Question 1

define electronegativity

Answer 1

the ability of an atom to attract the bonding electrons in a covalent bond

Question 2

where does electronegativity increase?

Answer 2

along a period
as atomic radius decreases and charge density increases

Question 3

where does electronegativity decrease?

Answer 3

down a group
as shielding increases and atomic rdaius increases so charge density decreases

Question 4

what is a permanent dipole?

Answer 4

2 atoms bonded with different electronegativities, the more electronegative atom draws more of the negative charge towards itself

Question 5

how is a molecule polar?

Answer 5

requires polar bonds with dipoles that do not cancel due to their direction