1:24

1:24 understand why the noble gases (Group 0) do not readily react

The noble gases are inert (unreactive) because they have a full outer shell of electrons.

Spec	Q'stion	Ans	MS
1:24	Jan '12 (2), Q 2 a ii	Answer	MkS
1:24	Jan '13 (1), Q 3 d ii	Answer	MkS
1:24	Jan '16 (2), Q 3 a	Answer	MkS
1:24	Jan '17 (1), Q 5 a ii	Answer	MkS
1:24	May '10 (1), Q 11 a	Answer	MkS
1:24	May '12 (2), Q 1 a iii	Answer	MkS
1:24	May '13 (1R), Q 1 b iv	Answer	MkS
1:24	May '14 (2), Q 3 a iii	Answer	MkS
1:24	May '14 (2R), Q 1 e i	Answer	MkS
1:24	May '14 (2R), Q 1 e ii	Answer	MkS
1:24	May '17 (2), Q 3 b	Answer	MkS