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Crossword No15

ACROSS

1 Russian chemist (1834–1907) who devised the periodic table of elements (6,9)

9 ___ Sea, saltwater lake east of the Caucasus (7)

10 Component of an atomic nucleus (7)

11 Burrowing mammals of the family Talpidae; SI units of chemical amount (5)

12 Term used in chemistry for two electrons that occupy the same orbital, but have opposite spins (5,4)

13 Avro ___, four-engined RAF bomber in use from 1942 (9)

15 δ (5)

16 To drive away through the action of, for example, a magnetic field; to resist absorption or mixture (5)

18 Treated with drugs or other remedies (9)

20 Marine structure built by polyps (5,4)

23 Closed curves in an egg-shaped plane (5)

24 Resistance of an object to change in its state of motion (7)

25 Unprocessed information (3,4)

26 Pungent air pollutant (8,7)

DOWN

1 3/10 expressed as 0.3, for example (7,8)

2 Hormone produced in the human pancreas (7)

3 In computing, to set up software again (9)

4 Himalayan bird of the pheasant family (5)

5 Swiss company prominent in the field of atomic force microscopy (9)

6 In aviation, an engine-indicating and crew-alerting system (5)

7 Visual organ (7)

8 Sexually transmitted infection (8,7)

14 Of a geographical region, neither tropical nor polar (9)

15 British science-fiction series first broadcast in 1963 (6,3)

17 % (3,4)

19 Regions of grey matter in the human forebrain (7)

21 Prefix meaning “stone” that might come before -tomy, -graphy or -sphere (5)

22 SI unit of electrical capacitance (5)