Problems - Using Equation Editor SHOW all calculations!!! 1. The stannous fluoride in a 10.00 g sample of toothpaste was extracted and then precipitated with lanthanum nitrate solution. 0.105 g of precipitate was collected. What is the mass of SnF2 present in the toothpaste sample? What is the mass percentage of stannous fluoride in the 10.00 g sample of toothpaste? The percentage of SnF2 listed on the box was 1.50%. What does this say about our percent yield of the extraction/recovery process? ​

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.