Quantum Mechanics and Atomic Models
What is the charge of electrons?
-1 eV
(negative)
In which model are electrons arranged in fixed energy levels around the nucleus?
Bohr Model
What is the periodic table organized by?
Name one group found on the periodic table.
Could be: alkali metals, alkaline earth metals, halogens, or noble gasses. (transition metals is not a group, cause a group is one column.)
What is a period?
horizontal row on periodic table
Where are protons located within an atom?
nucleus
How many electrons in the s orbital?
2
How many valence electrons does an element in Group 16 have?
6
What is the name for group number 1 (besides hydrogen).
alkali metals
Are electrons attracted to the negative or positive side of a magnet?
negative
How does the mass of electrons compare to the mass of the nucleus?
not significant
What does the Heisenberg Uncertainty Principle state?
can't know both position and velocity (direction) or a particle.
Define atomic radius and how it varies across the periodic table.
The size of an atom. Increases down and to the left.
What is the name for group #2?
Alkaline Earth Metals
What is a Coulomb a measure of?
charge
How many electrons are in the third energy level?
8
What is the electron configuration for silicon?
1s22s22p63s23p2
Define electronegativity and how it changes across the periodic table.
It is how much an atom attracts electrons when in a covalent bond. Increases to the right and up.
What is the name for all the elements in the d block?
transition metals
Draw orbital filling diagram for fluorine.
(can't insert pictures), google it lol
What is the mass of an electron?
9.11 * 10^-28 g
(not on the test)
Calculate the possible quantum numbers (n, l, m, ms) for an electron in a 3p orbital.
3, 1/p, -1/0/+1, +1/2,-1/2
Define ionization energy and how it varies across the periodic table.
Name all the metalloids.
You don't have to know this for the test, but it is good to know:
Explain how Rutherford's Gold Foil Experiment demonstrated the presence of a nucleus.
Reflected back alpha particles, but most alpha particles went straight through, showing that there is a dense mass in the middle of the atom.