chemistry lesson 8 miss b

a level chemistry notes:

ionisation:

• the energy requires to remve 1 electron from each atom in a mole of atomes in the gaseous state (KJmol-1)

                              X(g) -----> X+(g)  +  e-

ionisation of Na: the energy will vary with different elements

                             Na(g) ----> Na+(g) +  e-

factors affecting ionisation energy:

• electron shielding: the more number of shells, the easier the outer electrons to lose
• chage on the nucleus: the more protons, the more srongly electrons are attracted to it
• distance…