Please help This is for science and I don’t understand

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

Which of the following statement is false ? a.batteries should never be stored on metal trays or outside in the elements)b, battery acid cannot be neutralized)c.do not stack batteries on top of each other)d.never put a damaged battery in a dumpster. i

Ascientist wants to test ways to reduce pollution in lake . what is the bestway of doing this