| IRIDIUM | Element, atomic no. 77, with a very high melting-point (7) |
| ICENINE | High-melting-point substance in a Vonnegut novel |
| MAGENTA | Mother joins a chap with a very high colour (7) |
| RHENIUM | Chemical element with the third-highest melting point (3186degreesC) and second-highest boiling (5630degreesC); atomic no. 75 (7) |
| DEADSEA | Lake between Israel and Jordan with a very high salinity (4,3) |
| YTTRIUM | Metallic element, atomic no. 39, named after a Swedish village (7) |
| KRYPTON | Inert gaseous element, atomic no 36 (7) |
| BOHRIUM | Synthetic radioactive chemical element, atomic no. 107, formerly called unnilseptium (7) |
| CADMIUM | Metallic element used in alloys to lower the melting point (7) |
| RHODIUM | Metallic element, atomic no 45 (7) |
| CELSIUS | Scale of temperature in which 0 degrees represents the melting point of ice (7) |
| ANAGRAM | Scale of temperature in which 0 degrees represents the melting point of ice (7) |
| TJOSHIE | He wears No. 77 in Washington |
| PLATINUM | A very heavy, precious, silver-white metal, this mineral is soft and ductile and has a high melting point and good resistance to corrosion. Compared to other popular precious metals, this mineral is v |
| GHEE | Fat with a very high smoke point |
| MONOMANIA | Record set by fellow, one with a very high level of self-regard |
| TREBLE | Boy with a very high singing voice (6) |
| DONKEY | Cricket delivery with a very high trajectory. .... drop (6) |
| IRON | With a melting point of 1,538 degrees C, metal with a symbol derived from its Latin translation ferrum (4) |
| FULLOFONESOWNIMPORTANCE | With a very high self-regard |
