Question

please help with this crossword below

Down

1. Fluorine gets its name from ther mineral ____________ (8 letters)

2. First to isolate potassium, sodium and other elements using electrolysis (4 letters)

4. In metallic hydride, the hydride ion sits in the these positions (12 letters)

6. Silicon carbide (11 letters)

7. white phosphorus has this shape (11 letters)

10. When sulfur trioxide is dissolved in 98% sulfuric acid the resulting liquid is commonly called______ (5 letters)

13. More of this acid is tis produced annually than any other chemical (8 letters)

15. Produced by the haber process (7 letters)

18. Process for graphite production (7 letters)

20. Scale for measuring hardness (4 letters)

Answer 1

1) the name fluorine is came from mineral fluorite.so we name as fluorine gas

So fluorite is correct