A) \[N{{a}_{2}}F.Al{{F}_{6}}\]
B) \[N{{a}_{3}}Al{{F}_{6}}\]
C) \[N{{a}_{3}}Al{{F}_{5}}\]
D) \[N{{a}_{2}}Al{{F}_{3}}\]
Correct Answer: B
Solution :
The molecular formula of cryollite is\[N{{a}_{3}}Al{{F}_{6}}\].Element | Mass | Percentage | Mass Ratio | Simplest Ratio |
C | 24 | 40 | 40/12=3.33 | 3.33/3.33=1 |
H | 4 | 6.66 | 6.66/1=6.66 | 6.66/3.33=2 |
O | 32 | 53.33 | 53.33/16=3.33 | 3.33/3.3=1 |
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