Atoms Flashcards
Where’s are the electrons?
On orbitals
Relative mass of proton?
1
Relative number of neutron
1
Relative number of electron
1/1800
Charge of proton
+1
Charge of neutron
0
Charge of electron
-1
On the periodic table which number is the total number of protons and neutrons in the shell?
Mass number the bigger one
What’s the smaller number on the periodic table?
Atomic mass number of protons in the nucleus.
Define isotope
Atoms with same number of protons but different number of neutrons
Why do isotopes have similar chemical structure?
Same electronic structure
Why might isotopes have slight differing physical properties?
Different masses
What can mass spectrometer be used for?
To determine all isotopes present in a sample of an element and therefore identify elements
Why does mass spectrometer need to happen underneath a vacuum?
Air particles would ionise and register on the detector
What are the four stages of mass spectrometer?
1) ionisation
2) acceleration
3) drift area
4) detection