Term
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Definition
| The movement of an electron from one energy level to another |
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Term
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Definition
| represented by means of an arrow |
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Term
| Why was Bohr's model accepted? |
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Definition
| It was the FIRST model of them atom that could explain the hydrogen spectrum |
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Term
| What is given off when an electron goes to a lower energy level? |
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Definition
| A proton of electromagnetic radiation |
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Term
| How can an electron go to a higher energy level? |
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Definition
| Only by absorbing energy from an outside source |
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Term
| When is an atom in an excited state? |
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Definition
| When one of its electrons has been promoted to a higher energy level |
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Term
| When an atom is in the ground state, where are the electrons? |
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Definition
| In the lowest possible energy levels |
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Term
| Emission spectrum of hydrogen atoms |
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Definition
1. Lymon Series
2. Balmen Series
3. Paschen Series |
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Term
| Emission Spectrum of Hydrogen atoms |
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Definition
| Consists of thre series of lines |
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Term
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Definition
- Produced by Uv photons
- Due to transition of electrons from higher energy levels to n=1 |
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Term
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Definition
- Produced by visible photons
- Due to the transitions of electrns from higher energy levels to n=2 |
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Term
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Definition
- Produced by i.n. photons
- Due to the transition of electrons from higher energy levels to n=3 |
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Term
| What could Bohr's model of the atom explain? |
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Definition
| The spectra of single atoms with one electron |
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Term
| The wavelike properties of electrons are useful for what? |
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Definition
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Term
| Why was Rutherford's model replaced? |
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Definition
1. It couldn't explain why metals of compounds give off characteristic colors when heated
2. The chemical properties of the elements |
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Term
| In Bohr's model, electrons are arranged in what? |
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Definition
| Specific, concentric, circular paths or orbits around the nucleus |
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Term
| In Bohr's model, electrons in a particular circular path have a what? |
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Definition
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Term
| In Bohr's model, electrons in the cuircularpath closest to the nucles have the? |
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Definition
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Term
| In Bohr's model, electrons in the circular path furthest away from the nucles have? |
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Definition
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Term
| In Bohr's model, electrons can? |
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Definition
| They can jump from one energy levels to another |
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Term
| In Bohr's model, the amount of energy needed to move an electron from its present energy level to the next higher one is called? |
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Definition
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Term
| In Bohr's Model, what gets closer the higher you go? |
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Definition
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Term
| In Bohr's model, the elecgtron goes up the ladder and gets further away from the nuclus, what happens to the energy level? |
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Definition
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Term
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Definition
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Term
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Definition
| Named after an area of physics which uses advanced math to study atoms and subatomic particles |
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Term
| Who was one of the main people who developed the quantum mechanical model? |
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Definition
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Term
| The quantum mechanical model tells us atoms have: |
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Definition
- Prinicipal energy levels
- Sublevels
- Orbitals |
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Term
| What is similar to Bohr's energy levels? |
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Definition
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Term
| 1, 2, 3, etc. What are these numbers called that are associated with principal energy levels? |
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Definition
| Principal quantum numbers; These numbers are represented by the letter m |
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Term
| Principal energy levels conatin? |
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Definition
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Term
| Each principal energy level has: |
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Definition
- N sublevels
- N squared orbitals
- 2 N squared electrons when completely filled |
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Term
| Sublevels of a prinipal energy level have: |
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Definition
- Equal energies when the atom contains only 1 electron
- Differen energies when the atom has more than 1 electron |
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Term
| Are not the same as orbits |
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Definition
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Term
| Region in space in which it is most likely to find an electron |
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Definition
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Term
| Each orbital can have a maximum of? |
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Definition
| 2 electrons (Called an orbital pair) |
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Term
| Used to describe the placement of electrons in orbitals |
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Definition
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Term
| What is a half filled orbital represented by? |
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Definition
| A box or circle containing a single arrow pointed either up or down |
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Term
| What is a filled orbital represented by? |
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Definition
| A box or circle containing 2 arrows, one pointing up and the other pointing down |
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Term
| A shorthand notation describing the arrangement of electron in an atom |
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Definition
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Term
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Definition
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Term
| Type of orbital or sublevel |
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Definition
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Term
| Orientation of orbital (optional) |
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Definition
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Term
| Number of electrons in an electron configuration |
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Definition
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Term
| Equals the total number of electrons in the atom |
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Definition
| Superscript Total of the Electron configuration |
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Term
| Equals Z, the atomic number (total number of protons), when the atom is neutral |
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Definition
| Superscript total of the Electron Configuration |
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Term
| How to simplify Electron configurations: |
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Definition
1. Do not use subscripts
2. Use mobile gas symbols |
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Term
| Electrons enter orbitals of lowest energy first |
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Definition
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Term
| An atomic orbital may have at most 2 electrons and they must have opposite spins |
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Definition
| Pauli exclusion principal |
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Term
| When electrons occupy orbitals of equal energy, one electron enters each orbital until all the orbitals contain one electron with the same spin |
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Definition
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Term
| Ground state Electron configuration Rules |
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Definition
1. Aufbou principle
2. Pauli exclusion principal
3. Hund's rule |
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Term
| Filled sublevels are more stable than what? |
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Definition
| partially filled sublevels |
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Term
| Half filled sublevels are not as stable as filled sublevels, but are more stable than? |
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Definition
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Term
| The quantu mechanical model grew out of the study of what? |
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Definition
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Term
| Who thought of light as consisting of particles? |
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Definition
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Term
| By 1900, most scientists believed light was a? |
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Definition
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Term
| A ____ is a wiggle (vibration) in time through space |
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Definition
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Term
| The distance between 2 neighboring crests |
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Definition
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Term
| Number of wave cycles to pass a given point per unit of time |
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Definition
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Term
| The waves height from its origin (zero point) to the crest |
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Definition
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Term
| An arrangement of different types of waves acording to wavelength and frequency |
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Definition
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Definition
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Term
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Definition
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Term
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Definition
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Term
| The product of any 2 variables that are inversely related is equal to: |
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Definition
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Term
| What are the two things that the modern theory of light says that light has? |
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Definition
| A wave of nature and a particle of nature |
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Term
| The modern thoery of light says that light is composed of what? |
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Definition
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Term
| A particle of ligh which has a frequency and wavelength |
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Definition
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Definition
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Definition
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Term
| Can travel billions of miles thrugh space and tell us the atoms that are present in the stars |
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Definition
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Term
| Light is often composed of many different types of light each having a different? |
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Definition
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Term
| Different types of light can often seperated by what? |
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Definition
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Term
| When does every element emit light? |
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Definition
| When it is excited by the passage of an elctric discharge through its gas or vapor |
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Term
| When light from excited elements pass through a prism, you get a? |
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Definition
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Term
| What does each element of light have? |
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Definition
| Its own, unique emission spectrum |
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Term
| Each line in the emission spectrum is produced by an: |
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Definition
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