This scientist was the teacher of Niels Bohr. His atomic model couldn't explain the chemical properties of elements.
Ernest Rutherford
100
What is the lowest principal energy level?
1
100
What is the electron configuration of oxygen?
1s2, 2s2, 2p4
100
What is the maximum # of electrons each orbital can hold?
2
200
This scientist was responsible for the Quantum Mechanical Model.
Erwin Schrodinger
200
What types of atomic orbitals are in the third principal energy level?
s, p, and d
200
What is the electron configuration of Calcium?
1s2, 2s2, 2p6, 3s2, 3p6, 4s2,
200
How many electrons are in the highest occupied energy level of Aluminum?
3
300
How did Bohr describe the movement of electrons?
Bohr said the electrons moved in specific circular paths around the nucleus
300
What is the maximum number of f orbitals in any single energy level in an atom?
7
300
What is the electron configuration of Arsenic?
1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p3
300
How many electrons are in the highest occupied energy level of Antimony?
5
400
Explain what has to occur for an electron to move up an energy level and/or move down an energy level?
To move up an energy level an electron has to gain a specific amount of energy.
To move down an energy level an electron has to lose a specific amount of energy.
400
How many unpaired electrons are in a sulfur atom?
2
400
What is the electron configuration of Molybdenum?
1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s1, 4d5
400
Describe the shapes of the s, p, d, and f atomic orbitals.
s is spherical, p is dumbbell shaped, d is complex in shape, and f is very complex in shape.
500
Describe the three principals that govern the building of an electron configuration.
1. The aufbau principle states that electrons enter the orbitals of lowest energy first.
2. The Pauli exclusion principle states that each orbital can hold only two electrons.
3. Hund's rule states that electrons first enter separate orbitals of the same energy, with each electron having the same spin, before pairing with electrons that have opposite spins.
500
How many electrons are in the highest energy level of a Rhenium atom? What level are they in?
Explain why the 4s sublevel fills before the 3d sublevel begins to fill as electrons are added.
Electrons occupy orbitals in a definite sequence, filling orbitals with lower energies first. But, in the third level the energy ranges of the principal energy levels begin to overlap. As a result, the 4s sublevel is lower in energy than the 3d sublevel, so it fills first.