* In all the 14 across solutions the two-letter symbol for a chemical element must be removed before entry in the grid
Across
7 bipartisan/partisan PA (Pennsylvania) in BRITAIN’S (anag) [Bi}
9 proposer/proper or proser PRO/POSER [Os or Po]
10 greasy/grey GR/EASY [As]
11 universality/university A SILVER (anag) in UNITY [Al]
12 sedative/dative I’VE after DATES (anag) [Se]
14 inelegance/elegance LINE(anag)/EG/(d)ANCE [In]
15 prentice/entice PR<TEN(part anag)>ICE [Pr]
17 costated/stated CO + TASTED (anag) [Co]
20 cloverleaf/overleaf C(ar)<LOVE/REAL(part anag)>F(ine) [Cl]
22 candyman/Cayman (H/c)ANDYMAN [Nd]
23 irresolutely/resolutely LUTE in LORRIES (anag) [Ir]
24 scarab/Arab S(mall/C<A/R(egina)>AB [Sc]
25 cerebral/cereal BRA(n) in CLE(v)ER (anag) [Br]
26 systematic/systemic MESSY ATTIC (anag) [At}
Down
1 marriage MARR/1/A,G,E [Johnny Marr]
2 Etty (b)ETTY [William Etty]
3 assume ASS/U(turn)/ME
4 appetent APP(l)E/TENT
5 constantly CONSTANT(in/E)/L(ament)/Y(ak)
6 hectic H(ot)/ETC(part anag)/I/C(old)
8 noises NO<1>SES
13 interloper INTER(Va)L = ROPE (anag)
16 coequals COE/QUAL(m)S [Lord (Seb) Coe]
18 dramatic A TIC under DRAM
19 offers (c)OFFERS
21 viewed VI<EWE>D(eo)
22 coyest aT/coconutS/somE/shY/tO/paniC (rev)
24 akee awAKE Eat (hidden)