CHEM0571

Question 1

Define the Aufbau Principle

Answer 1

orbitals fill from lowest energies to highest

Question 2

How do electrons pair up ?

Answer 2

They fill every electron shell singly and then pair up

Question 3

Define the Pauli exclusion principle

Answer 3

Each orbital can hold a maximum of two electrons that spin in the opposite direction relative to each other

Question 4

Describe the trend exhibited by increasing atomic radius

Answer 4

decreases across periods due to increasing effective nuclear charge (pulls electrons closer to nucleus, makes it harder to remove electron)

Question 5

Under what conditions would a bond form

Answer 5

bond forms if the system becomes lower in energy than when atoms are apart

Question 6

Define ionic bonding

Answer 6

both metal and non-metal seek
stable noble gas electron configuration, and form an ionic salt