1.5 Atomic Spectroscopy Flashcards
What can flame tests and Atomic spectroscopy show?
It can identify elements
What are the subshells?
s, p, d and f
How many electrons in each orbital?
2 electrons
Which elements are ‘s’ blocks?
Groups 1 and 2
Which elements are ‘p’ blocks?
Group 3-8
Which elements are ‘d’ blocks?
transition metals
When are elements excited?
When the electrons absorb energy and move to higher energy levels.
How do the elements return to their ground state?
The elements release energy to return to the ground state.
Why do elements release different wavelengths?
Because they have a unique electron configuration and thus will absorb different wavelengths of light and hence will emit different wavelengths.
What are the steps to use a spectrometer?
- Turn on elements lamp (e.g. if trying to find iron use an iron lamp)
- Make solutions
- Plot calibration curve
How do you identify elements using AAS spectrums?
The emissions that are absorbed (blank spaces in the spectra) are the elements that are present
What is emission spectra used for?
identify what types of compounds
What is the absorption spectra used for?
Finding the amount of a substance
