This crossword No. 11063 clues and answers were published on Thu 20 Oct 2005 and the puzzle can be visited by following The Guardian Quick Crossword No. 11063 link.
All Across Clues and Answers:
5-across – Buy nectar : CYBERNAUT
8-across – Group – smudge : BLUR
9-across – Green : IMMATURE
10-across – Car used in fairground : DODGEM
11-across – … is its atomic number: symbol Na : SODIUM
13-across – Standard carried at demo etc : BANNER
15-across – Strong and reliable : STURDY
16-across – Illegal – wicked : CRIMINAL
18-across – Container – military vehicle : TANK
19-across – … is its atomic number: symbol K : POTASSIUM
All Down Clues and Answers:
1-down – … ditto: symbol H : HYDROGEN
2-down – … ditto: symbol He : HELIUM
3-down – Hostility : ANIMUS
4-down – Leave : QUIT
6-down – 1st century queen of Egypt : CLEOPATRA
7-down – Foundation of basic knowledge : GROUNDING
12-down – Uncertain : DOUBTFUL
14-down – Track for takeoff and landing : RUNWAY
15-down – Effect of jumping into water : SPLASH
17-down – : MOOD
This crossword has in total 20 where 10 are across and 10 are down.