Bell Ringer 12-5-23

What are valence electrons?

• Electrons in the nucleus of an atom

• Electrons in the middle energy levels of an atom

• Electrons in the outermost energy level of an atom

• Electrons in the innermost energy level of an atom

What is electron configuration?

• The study of electron behavior in a vacuum

• Arrangement of electrons in an atom, molecule, or other physical structure.

• The process of creating new electrons

• The movement of electrons between atoms

How many shells or energy levels are there in an atom?

• None

• One

• Two

• Multiple

What is the maximum number of electrons that can be present in the first energy level?

• 4

• 6

• 8

• 2

What is the maximum number of electrons that can be present in the second energy level?

• 16

• 32

• 2

• 8

What is the maximum number of electrons that can be present in the third energy level?

• 18

• 8

• 2

• 32

What is the maximum number of electrons that can be present in the fourth energy level?

• 32

• 8

• 64

• 16

What is an Aufbau diagram?

• A diagram used in biology to represent the structure of a cell.

• A diagram used in physics to represent the motion of a particle.

• A diagram used in mathematics to represent a geometric shape.

• A diagram used in chemistry to represent the electron configuration of an atom.

Which energy level is filled first according to the Aufbau principle?

• Fourth energy level

• First energy level

• Third energy level

• Second energy level

What is the electron configuration of oxygen?

• 1s2 2s2 2p2

• 1s2 2s2 2p3

• 1s2 2s2 2p6

• 1s2 2s2 2p4