Electron Configurations
What is the last part (include energy level, sublevel, and electrons; ex: 2s1) of the electron configuration for Br?
4p5
When reading the periodic table from left to right, the elements are sorted by increasing ___________________.
atomic number (number of protons)
What two sections of the periodic table are in the f block?
Lanthanides and Actinides
Atomic radius is the distance between...
the nucleus and the outside of the atom (or the outermost energy levels)
How many electrons can fit in each of the four types of sublevels?
s - 2
p - 6
d - 10
f - 14
The f block belongs between which blocks, and in what rows? Also, what energy levels does it technically belong to when doing electron configurations?
s and d blocks
rows 6 and 7
n=4 and n=5 (4f and 5f)
What five sections of the periodic table are all metals?
alkali metals, alkaline earth metals, transition metals, lanthanides, actinides
What does it mean if ionization energy is high?
it is difficult (takes a lot of energy) for this atom to lose/let go of electrons
Which 3 sublevels (include the energy level in your answer; ex: 6s) come after 6s?
4f 5d 6p
Name the symbols of three elements in period 3.
Na, Mg, Al, Si, P, S, Cl, Ar
What two sections of the periodic table have essentially the same properties and reactivity (except for the fact that one is much heavier)?
alkaline earth metals and lanthanides
Noble gasses have the _______________ electronegativity and the ______________ ionization energy on the periodic table, because they don't want to ________________.
lowest, highest
gain or lose electrons
What is the unabbreviated electron configuration of P?
1s2 2s2 2p6 3s2 3p3
Name the symbols of four metalloids
B, Si, Ge, As, Sb, Te, Po, At
What section of the periodic table does not react at all?
(answer both questions)
actinides
noble gasses
Which element has a higher atomic radius and why: H, or He
H, because they are both at n=1, but He has more protons, so it pulls its electrons in tighter
What is the noble gas notation of Tc?
[Kr] 5s2 4d5
What are four properties of metals, and where specifically are they found on the periodic table?
shiny, conductors of heat, conductors of electricity, high tensile strength, malleable, ductile, dense, solid at room temperature.
Found to the left of the stair step/squiggly line
What are the two most reactive (but not radioactive) sections of the periodic table?
alkali metals and halogens
Which element has the lowest ionization energy: Na, Mg, or K
K, because Na and K want to lose an electron more than Mg. Between Na and K, K has a larger AR, which means it holds onto its electrons more loosely. Therefore it is the easiest for K to lose an electron.