Atomic Structure

Question 1

What is Mass Spectrometry?

Answer 1

It measures mass of atoms and their relative abundance enabling relative atomic mass values to be calculated
-measures fragmentation patterns

Question 2

Mass Spectrum stages of operation?

Answer 2

Injection of vaporized sample
Vaporization: vaporized and the gas streams into ionization chamber
Ionization: making positive ions
Acceleration:only positive ions attracted through slits
Deflection:magnetic field deflects lighter ions more than heavy ions
Detection: measures the mass and relative amounts of ions present

Question 3

How are line spectra produced?

Answer 3

By thin gases in which the atoms do not experience many collisions

Question 4

How are continuous Spectra produced?

Answer 4

When the gas pressures are higher, so that lines broadened by collisions between the atoms until they are smeared into a continum

Question 5

Explain Emission Spectra

Answer 5

Atom electrons are excited from their lowest state to an excited state. When electrons drop from a higher level to a lower level they emit energy which corresponds to a particular wavelength and shows up on line spectra.
The bigger the drop, the higher the energy

Question 6

What are the properties of Isotopes?

Answer 6

1. Are almost identical to one another
2. Slight difference in physical properties(bp)
3. Some radioactive
4. React with different rates