Atomic Model

Which of the following is true about Niels bohr's model of the atom?

• Electron were located inside of the nucleus

• Electrons orbit the nucleus like planets orbit the sun

• Electrons rotate around the nucleus in an electron cloud

• He didn't know electrons existed yet

Which electron filling diagram rule/principle is broken if refer to the following diagram?

• Aufbau Principle

• Pauli Exclusion Principle

• Hund's Rule

• It's Correct!

Which electron filling diagram rule/principle is broken if refer to the following diagram?

• Aufbau Principle

• Pauli Exclusion Principle

• Hund's Rule

• It's Correct!

How many electrons does it take to completely fill the 4th energy level?

• 2

• 8

• 18

• 32

What is the lowest energy sublevel for any atom?

• 3d

• 2s

• 1s

• 2p

Which correctly describes the d sublevel

• five orbitals of equal energy

• three orbital with different energy

• three orbital of equal energy

• one orbital

The two electrons in helium atom occupy _______orbital(s) and have ___________ electron spins

• the same, the same

• different, different

• the same, opposite

• different, the same

How many electrons can a single orbital hold?

• it depends

• 3

• 1

• 2

The Aufbau principle states that

• lower orbitals are filled last

• orbitals are filled in random order

• lower orbitals are filled before upper orbitals

• no lower energy orbitals are filled

How many electrons can fit in the second orbital?

• 2

• 4

• 6

• 8