Periodic Trends:- First ionisation energy.

1
Periodic Trends- First ionisation energy.
The first ionisation energy for lithium is the
energy that has to be supplied for remove one
mole of electrons from one mole of lithium atoms
in the gas state ie it is DH for Li(g) ?
Li(g) e-
2500
2250
First ionisation energy (kJ mol-1)
2000
1750
1500
1250
1000
750
500
250
H He Li Be B C N O F
Ne Na Mg Al Si P S Cl Ar K
Ca
Element