CH 2 - Atomic Structure and Interatomic Bonding

Question 1

What creates an ionic bond?

Answer 1

transferring of electrons, usually between a metal and a non-metal

Question 2

Do ionic bonds require a large or small difference in electronegativity?

Answer 2

large difference required

Question 3

What creates a covalent bond?

Answer 3

Sharing of electrons between two atoms

Question 4

Do covalent bonds require a large or small difference in electronegativity?

Answer 4

small difference, electronegativities are comparable

Question 5

What is mixed bonding?

Answer 5

• combination of ionic and covalent bonds

- % ionic character depends on relative positions of the atoms in periodic table

Question 6

What is metallic bonding?

Answer 6

• valence e- not bound to any particular atom
• delocalized as e- cloud
• excellent conductors of heat and electricity

Question 7

What is secondary or van der Waals bonding?

Answer 7

arises from coulombic interaction between dipoles