Moms old lincoln has a mass of 1800 kg. what is the weight of the old heap? (gravity=9.8 m/s/s)

answer; /// the amount of material dissolved in a measure of liquid(concentration) the above statement is (true); /// good luck

it's c (engineer's do their work with mechanical stuff not on any living being)

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.