Ioniseation Energy

Question 1

Basics

Answer 1

Must use the gas state symbol
The lower the ionisation energy the easier it is to take an electron from

Question 2

Factors effecting ionisation energy

Answer 2

Nuclear charge:the more protons there are in the nucleus the more positively charged and the stronger the attraction is for the nucleus

Distance from nucleus:attractions falls off very rapidly with distance

Shielding:as the number of electrons and shells between the nucleus and the outer electrons,the outer shells feel less attraction to the nucleus

Question 3

Second ionisation energy

Answer 3

Second ionisation energies require more energy due to the electrons being removed from a positive rather than an atom

Question 4

Ionisation trends across periods

Answer 4

A drop between group 2 and 3 : is due to the atoms shell structure last electron being on a different energy electron

The drop between 5 and 6 is due to electron repulsion this makes the electron easier to remove from shared orbitals