Periodic Table
This group on the Periodic Table is non-reactive.
What are the noble gases?
The octet rule says that atoms tend to move towards having this number of valence electrons.
What is eight?
How many grams are there in 4.5 moles of silver metal?
MM Ag = 107.86
4.5 moles Ag | 107.86 g = 485.37 g
| 1 mol Ag
Give me the electron configuration for Oxygen
1S2 2S2 2P4
Name two properties of halogens.
- 7 valence electrons
- Highly chemically reactive
- Mostly gases
As you move from left to right, this is what happens to atomic radius.
What is it decreases?
How many moles are there in 57.5 g water?
Water is H2O.
H = 1.00 g/mol * 2 = 2.00 g
O = 16.00 g/mol *1 = 16.00 g
Water total = 2+16 = 18.00 g/mol
57.5 g H2O | 1 mol = 3.19 mol
| 18.00 gGive the FULL electron configuration for Silicon.
1s2,2s2,2p6,3s2,3p2
What do we call the columns on the periodic table?
What are groups
Explain why ionization energy gets higher as you move from left to right on the Periodic Table.
As there are more and more protons in the nucleus of an atom, the electrons are more difficult to remove. This can also be remembered because as you move from left to right, the number of valence electrons gets closer to eight, meaning that an atom will be unlikely to give up an electron and more likely to steal an electron from a different atom.
How many particles in 2.4 moles of ammonium nitrate (NH4NO3)?
2.4 moles | 6.022 x 1023 particles = 1.44 x 1024
| 1 mole
Give the SHORTHAND electron configuration for Cl
[Ne] 3s2,3p5
Name 5 non metals
Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, etc.
This is what happens to electronegativity as you go down a group (column) and why we see that trend.
What is decreasing? This is due to the increased number of electron shells that create distance between the nucleus and the electrons, decreasing their attractive forces. The top element of a group will be the most electronegative (attracting electrons) and the lowest will be the least.
How many particles in 24 g ammonia (NH3)?
N = 14.01 g * 1 = 14.01
H = 1.00 g * 3 = 3.00
Total molar mass = 17.01 g/mol
24 g | 1 mol | 6.022 x 1023 part. = 8.49 x 1023
| 17.01 g | 1 mol
What is Electron configuration?
What is the distribution of an atom's electrons among its atomic orbital shells and subshells
What is the name of an element with a different number of neutrons than normal?
What is an isotope
This element has the highest electronegativity on the Periodic Table.
What is Fluorine? Neon is a Noble Gas, so it is non-electronegative. Fluorine is the most right in its period and the highest in its group, making it highly electronegative.
If a car produces 50 g of carbon dioxide per minute and it constantly runs for all of January, how many moles will it produce?
C = 12.01, O = 16.00 x 2 = 32.00; 32+12 = 44 g/mol
50 g | 60 minutes | 24 hours | 31 days | 1 mol
min | 1 hour | 1 day | January | 44 g
Final answer: 50,727 moles of CO2
Give me the electron configuration for tellerium
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p4