What the number for t c k when the notation is tl-2212 one ()?
Formula Notation T c (K) No. of Cu-O planes in unit cell Crystal structure
High-temperature superconductivity
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1-101336-1
Bi-, Tl- and Hg-based high-  c  superconductors
Critical temperature (T c ), crystal structure and lattice constants of some high-T c superconductors
YBa 2 Cu 3 O 7 123 92 2 Orthorhombic
Bi 2 Sr 2 CuO 6 Bi-2201 20 1 Tetragonal
Bi 2 Sr 2 CaCu 2 O 8 Bi-2212 85 2 Tetragonal
Bi 2 Sr 2 Ca 2 Cu 3 O 6 Bi-2223 110 3 Tetragonal
Tl 2 Ba 2 CuO 6 Tl-2201 80 1 Tetragonal
Tl 2 Ba 2 CaCu 2 O 8 Tl-2212 108 2 Tetragonal
Tl 2 Ba 2 Ca 2 Cu 3 O 10 Tl-2223 125 3 Tetragonal
TlBa 2 Ca 3 Cu 4 O 11 Tl-1234 122 4 Tetragonal
HgBa 2 CuO 4 Hg-1201 94 1 Tetragonal
HgBa 2 CaCu 2 O 6 Hg-1212 128 2 Tetragonal
table_101336_1
SELECT COUNT T c (K) FROM table WHERE Notation = Tl-2212
Tl-2212