Electronegativity & Bond Polarity

Question 0

_______describes the distribution of negative charge in a molecule

Answer 0

Electron density

Question 1

Define electronegativity WORD FOR WORD

Answer 1

The power of an atom to withdraw electron density from a covalent bond

Question 2

What 3 factors does electronegativity depend on?

Answer 2

• nuclear charge
• atomic radius
• shielding (number of shells)

Question 3

What are the 2 trends of increasing electronegativity in a periodic table?

Answer 3

• going up a group

- going across (right)

Question 4

Factors that increase electronegativity:

Answer 4

• decreasing atomic radius
• increasing nuclear charge
  Therefore strong attraction between nucleus and bonding pair

Question 5

Factors that decrease electronegativity:

Answer 5

-increasing atomic radius
- decreasing nuclear charge
- more shielding
Therefore weaker attraction between nucleus & bonding pair