Electron configuration worksheet Flashcards
3MAR25
What model was Rutherford’s gold foil experiment testing?
Plum pudding
What is the standard atomic notation (nuclear symbol) for c-14?
6C14
In a mass spectrometer, the 2nd stage is ionization. Name and describe what happens in the 3rd?
The deflection stage
- Ions are separated by mass and deflected by magnetic field
What is the formula for the energy of a photon?
Ephoton = hf
In the hydrogen atom all visible transitions are the transitions down to what energy level?
Second
In what block in the period table does sulfur belong to?
P block
What is the Aufbau principle?
Electrons will always fill the lowest energy first
What is the electron arrangement for Mg?
2,8,2
What is the electron arrangement for N3-?
2,8
What is the difference between an absorption spectrum and an emission spectrum?
An emission spectrum produces bright colours while an absorption spectrum produces dark colours
What is the electron configuration of Cu?
1S^2 2S^2 2P^6 3S^2 3P^6 3D^9 4S^2
What is the electron configuration for Co2+?
1S^2 2S^2 2P^6 3S^2 3P^6 3D^7
What is the condensed electron configuration for Se?
[Ar] 3D^10 4S^2 4P^4
Define the term isotope?
Atoms of the same element but different numbers of neutrons
How many sublevels are in the fourth energy level?
4
How many electrons can the second energy hold?
8
How many atomic orbitals are in the 3rd energy level?
9
What is the purpose of a spectroscope?
To analyze light and determine it’s components as well as identifying metals
What does it mean when electrons are excited?
It means that atoms are sent into a higher energy level
Why do different chemicals emit different colours of light?
B/c different elements have different line spectrums meaning their electron configurations are different
