How does the ionisation energy differ across period 2 from Li to Ne?
The ionisation energy across a period increases as the effective nuclear charge increases but the shielding stays the same.
Effective nuclear charge= the electrostatic 'pull' that an electron 'feels' from a proton in the nucleus, this can be decreased by the shielding from other electrons (as the two negative charges repel one another).
HG
Related Chemistry A Level answers
All answers ▸Write a half-equation for the overall oxidation of ethanol into ethanoic acid.
State the qualitative tests to distinguish between halide ions in solution.
Why does ice float on water?
How would you expect the H-NMR spectrum of ethanol to differ from the H-NMR spectrum of ethane?