2016 H2 Chemistry JC1 & 2 students post your questions here

• UltimaOnline

  23 Nov 16, 19:10

  Originally posted by Jh2424:

  Hello, I have another question regarding Ionisation Energy

  For noble gases, as to why they have the highest Ionisation Energy among the elements, is it because they are at the end of the period(where they have increased nuclear charge) or is it because they have a stable electronic configuration hence making extraction of electrons difficult

  Thanks :)

  
  The former, of course. The latter is not a valid explanation, merely a desperate attempt at 'smoking'.
• Jh2424

  23 Nov 16, 19:25

  Originally posted by UltimaOnline:

  
  The former, of course. The latter is not a valid explanation, merely a desperate attempt at 'smoking'.

   Oh I see, thank you 

• cienhan

  1 Dec 16, 21:13

  i love chem!!

   

• yirong99

  1 Dec 16, 22:00

  I love chem!

• Jh2424

  1 Dec 16, 22:18

  Hello, would like to ask a question

  As to why c=c is stronger than c-c bond, is it because of the additional pi bond, or because the sigma bond in c=c is shorter due to increased S character in the sp2 hybridization causing the bond to be closer to the nucleus?

• UltimaOnline

  1 Dec 16, 22:30

  Originally posted by Jh2424:

  Hello, would like to ask a question

  As to why c=c is stronger than c-c bond, is it because of the additional pi bond, or because the sigma bond in c=c is shorter due to increased S character in the sp2 hybridization causing the bond to be closer to the nucleus?

  
  Both, of course. In the A level exams, for any question, if you dunno which one Cambridge wants, always give both or all reasons.

  I'm locking this thread now, and setting up a new H2 Chem thread for 2017.