Checkpoint 3 Flashcards
Runs out first in a chemical reaction; limits the amount of product that can form
Limiting reactant
Does not get completely used up by the reaction; some is left over at the end of the reaction
Excess reactant
How do you find percent yield?
Actual/ideal x 100
How does Rutherford’s model differ from Bohr’s model?
Rutherford believed that electrons roam freely while Bohr had specific orbitals
Protons and electrons in nucleus; electrons occupy most of the space in an atom
Rutherford’s model
Suggests that electrons are located in specific orbitals around the nucleus
Bohr model
How is Bohr’s model different from the quantum model?
Quantum model has regions of electron density rather than electrons orbiting around the nucleus
Describes the size or distance of the orbital
Principle quantum number (n)
Describes the shape
Sublevel
What are the values of the sub levels?
s,p,d,f
How many orbitals does the s,p,d, and f sub levels have?
1,3,5,7
How many electrons can the s,p,d and f sub levels hold?
2,4,6,10,14
What is the trend for atomic radius?
decreases as you go left to right, increases as you go up and down
What is the trend for ionization energy?
increases as you go left to right, decreases as you go up and down
Why does the atomic radius get larger as we move down a group?
more electrons occupy higher energy levels
