Scientists
What is Aufbau Principle?
Aufbau Principle is when each electron is added into the subshell with lowest energy orbital available
How is the energy of electrons organized in the quantum model?
The energy of electrons are organized in the quantum model in energy levels, sublevels (s,p,d,f).
For a principal quantum number, n, equal to 6, what is the total number of orbitals permitted?
n=6 orbitals n=6^2 = 36
True or false: Orbitals are 2 dimensional rings?
False, it is a 3 dimensional space
Why are noble gases chemically stable?
They have a full outer electron shell.
What do De Broglie’s hypothesis states?
His hypothesis states that the all matter exhibits both particle-like and wave-like properties
What is the symbol for principal quantum number?
n
Is the 6p orbital permitted? (Y or N)
Yes
True or false: Electrons are a variable distance from nucleus
True
Why are elements in the same group similar in chemical behavior?
They have the same number of outer electrons.
What does Heisenberg’s Uncertainty Principle states:
The principle states that due to the wave nature of matter, it is impossible to predict both the position and momentum of an e- with certainty.
What is Azimuthal quantum number (l) also known as?
orbital shape
What is the correct representation for an orbital which has an n value of 3 and an I value of 1?
n=6 l=1
What is the shape of an s-orbital?
The shape of an s-orbital is sphere
How does an element’s electron configuration relate to its period in the periodic table?
The period number corresponds to the highest energy level.
What was Neil Bohr’s major contribution to quantum theory?
He proposed a model of the atom where electrons orbit the nucleus at specific energy levels.
What does the quantum model of the atom describe?
The quantum model of the atom describes the behavior of electrons in an atom as waves.
List all the possible quantum numbers for an electron in the 2s orbital
n = 2
l = 0
m1 = 0
ms = 0(-½, +½ )
What is the shape of a p-orbital?
The shape of an p-orbital is dumbbell-shaped
What is the electron configuration of magnesium (atomic number 12)?
1s² 2s² 2p⁶ 3s²
How did Rutherford’s experiment impact quantum theory?
Rutherfor’s famous experiment impacted quantum theory as his experiment revealed the existence of the atomic nucleus which leads to models of the atom in quantum theory
What is an electron cloud?
An electron cloud is a visual representation of the probable locations of electrons around the nucleus of an atom.
List all the possible quantum numbers for an electron in the 5f orbital
n = 5
l = 3
m1 = -3, -2, -1, 0, +1, +2, +3
ms = +½, -½
How many electrons can fit in a single orbital?
A single orbital can hold a maximum of 2 electrons.
what are the abbreviated electron configuration of the cobalt element
[Co]: 1s2, 2s2, 2-6, 3s2, 3p6, 4s2, 3d7