C1- Atomic Structure Flashcards
(47 cards)
what are the theee subatomic particles that make up an atom
protons neutrons electrons
proton:
1) relative mass
2) actual mass
3) relative charge
1) 1
2) 1.67x10^-27Kg
3) +1
neutron:
1) relative mass
1) 1
electron:
1) relative mass
2) relative charge
1) 1/1840
2) -1
what subatomic particles are neucleons
protons and neutrons
what is different about isotooes
number of neutrons
what is the mass number equal to
number of protons and neutrons
name three tyoes of isotooes of hydrogen
protium
deuterium
tritium
what is relative atomic mass RAM relative to
1/12 the mass of carbon-12
what dies TOF stand for
time of flight
name two methids of ionisation
electrospray and electron impact
what tyoe if solvent is used in TOF-MS
polar solvent
how are particles accelerated in TOF-MS
using an electric field
all particles are given the same…
kinetic energy
what sorr of oarticles move fastee?
lighter oarticles
how are particles detected in TOF-MS
ions cause an electric current to flow when they hit the detector
what is plotted in a mass spectrum
relative abundance vs mass to charge ratio (m/z)
what is the largest peak in a MS called
base peak
what does the base peak show?
the most stable ion
what dies the peak with the highest mass show?
the molecular ion
what does the molecular ion peak show?
relative molecular mass
what is the wnergy level number called
the principle wuantum number
what happens to the energy levels as you move further from the nucleus?
they get closer together
what is a sub shell
an orbital or combination of orbitals
