Back to the full dot-point answer
SingaporeChemistryQuick questions
Inorganic Chemistry
Quick questions on Periodicity of Period 3 elements, oxides and chlorides: Singapore A-Level H2 Chemistry
6short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is melting point?Show answer
Melting point depends on structure, not a simple trend:
What is electrical conductivity?Show answer
Conductivity rises Na to Al (more mobile delocalised electrons per atom), drops sharply at Si (semiconductor), and is essentially zero for the molecular non-metals and argon (no mobile charge carriers).
What are acid-base behaviour of the oxides?Show answer
The clearest periodic trend is in acid-base character, from basic to amphoteric to acidic:
What is q1?Show answer
Explain why atomic radius decreases across Period 3. [2 marks]
What is q2?Show answer
State the structure and bonding of (a) and (b) , and predict which has the higher melting point. [3 marks]
What is q3?Show answer
Write equations for the reaction of with (a) hydrochloric acid and (b) sodium hydroxide, to show it is amphoteric. [2 marks]
Have a question we have not covered?
This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.