Explain why sulfur deviates from the general trend in ionisation energies across period 3.
Sulfur has the electronic structure [Ne]3s2 3p4. This means there are 2 electrons in the same p orbital. These repel each other making it easier to remove the electron causing the ionisation energy to be lower than expected.
AM
Related Chemistry A Level answers
All answers ▸Describe and explain the trend in reactivity of Group 2 elements with chlorine as the group is descended?
Explain Le Chatelier's Principle
Name the reagent and explain the process of 1-bromoethane into propanoic acid
A buffer solution is made with a pH of 5.000. Solid sodium ethanoate, CH3COONa, is added to 400 cm^3 of 0.200 mol dm^–3 ethanoic acid (Ka = 1.75 × 10^–5 mol dm^–3). Calculate the mass of sodium acetate that must be dissolved in the acid to prepare this