Topic 1 - Atomic Structure And Periodic Table Flashcards
Ions have…
A different number of protons and electrons
Isotopes are…
Elements with the same number of protons but a different number of neutrons
Mass spectra shows…
The different isotopes
Transition metal ions behave differently because…
They lose electrons from the 4s orbital before the 3d orbital
(Atomic emission spectra) line spectra is used to…
Identify elements and is evidence for quantum shells
Ionisation requires energy so…
They are always an endothermic process and have a positive value
Down a group ionisation energy…
Decreases due to increased shielding and atomic radius
Across a period ionisation energy…
Increases due to an increase in atomic number
Successive ionisation is…
The removal of more than 1 electron from the same atom
For successive energy graphs, big jumps in energy represent…
New shells
Elements in the modern periodic table is ordered by…
Proton number NOT mass number
Atomic radius across a period…
Decreases due to an increase in protons (same shielding, so no effect)
Atomic radius down a group…
Increases due to an increase in electron shells
