TOPIC 2 Chemical Bonding And Structure

Question 1

What is the general trend in electronegativity of elements in the periodic table?

Answer 1

Decreases down a group

Increases across a period

Question 2

What happens when 2 atoms with different electronegativities are bonded together?

Answer 2

The distribution of electronegativity will not be symmetrical
Electron density is higher around the more electronegative atom and this has a slightly negative charge
Electron density is lower around the less electronegative atom and this has a slightly positive charge