Atomic Orbital |
region of high probability of finding an electron |

Aufbau Priniciple |
tendency of electrons to enter orbitals of lowest energy first |

Electron Configuration |
arrangement of electrons around atomic nucleus |

Ground State |
lowest energy level |

Pauli Exclusion Prinicple |
each orbital has at most two electrons |

Heisenberg Uncertainty Principle |
states the impossibility of knowing both velocity and position of a moving particle at the same time |

In Bohrs model of the atom, where are the electrons and protons located? |
The electrons move around the protons, which are at the center of the atom. |

How does the energy of an electron change when the electron moves closer to the nucleus? |
It increases. |

The principal quantum number indicates what property of an electron? |
Energy level |

What is the shape of the 3p atomic orbital? |
dumbell |

How many energy sublevels are in the second principal energy level? |
2 |

What is the maximum number of f orbitals in any single energy level in an atom? |
7 |

What is the maximum d orbitals in a principal energy level? |
5 |

What is the maximum number of orbitals in the p sublevel? |
3 |

What is the maximum number of electrons in the second principal energy level? |
8 |

When an electron moves from a lower to a higher energy level, the electron… |
absorbs a quantum of energy |

If the spin of one electron in an orbital is clockwise, what is the spin of the other electron in that orbital? |
counterclockwise |

What types of atomic orbitals are in the third principal energy level? |
S, P, and D |

What is the next atomic orbital in the series 1s, 2s, 2p, 3s, 3p? |
4s |

According to the aufbau principle… |
electrons enter orbitals of lowest energy first. |

What is the number of electrons in the outermost energy level of an oxygen atom? |
6 |

What is the electron configuration of potassium? |
1s²2s²2p⁶3s²3p⁶4s₁ |

If three electrons are available to fill three empty 2p atomic orbitals, how will the electrons be distributed in the three orbitals? |
on electron in each orbital |

How many unpaired electrons are in a sulfur atom, what has the atomic number of 16? |
2 |

How many half-filled orbitals are in a bromine atom? |
1 |

Stable electron configurations are likely to contain… |
filled energy sublevels |

What is the basis for exceptions to the aufbau diagram? |
Filled and half-filled energy sublevels are more stable than partially-filled energy sublevels. |

Which scientist developed the quantum mechanical model of the atom? |
Erwin Schrodinger |

The quantum mechanical model of the atom.. |
involves the probability of finding an electron in a certain position. |

According to the Heisenberg uncertainty principle, if the position of a tiny moving particle is known, the.. |
velocity of the particle cannot be exactly determined. |

In an s orbital, the probability of findin an electron a particular distance from the nucleus can best be determined by the.. |
quantum mechanical model. |

# Chemistry 1 Chapter 5 Test Review

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