Atomic Structure Flashcards
1
Q
What is an Isotope
A
an atom of an element with the same number of protons and electrons but different number of neutrons
2
Q
what is relative isotopic mass
A
the mass of an atom of an isotope compared with 1/12 mass of carbon-12
3
Q
what is relative atomic mass?
A
weighted mean mass conpared with 1/12 mass of carbon-12
4
Q
what is a mass spectrometer used for
A
-pollution monitoring
-determination of atomic and isotopic masses
-drug testing
-specimens at crime scenes
5
Q
what are the 4 sub shells?
A
s-2
p-6
d-10
f-14
6
Q
what are orbitals
A
a region that can hold up to 2 electrons with opposite spins
7
Q
what is first ionisation energy?
A
the energy required to remove one electron from each atom in one mole of gaseous atoms
