"what is salt composed of? " maria wondered. she took a microscope from the cabinet in her science classroom, put some salt on a microscope slide, and focused on the salt. she saw tiny squares on the slide. "i guess salt is made only of crystals: " maria observed. is maria correct in her conclusion? a) yes. salt is composed of crystals. b) no. salt, like all matter is composed of atoms. c) no. salt like all matter is composed of compounds. d) no. salt, like all matter is composed of molecules.

Answer is: B)No. Salt, like all matter is composed of atoms.

Salt is an ionic compound composed of cations (positively charged atom) and anions (negatively charged atom)

For example, barium chloride is salt with ionic bonds. Barium chloride contains one barium cations (charge of ion is 2+) and two chlorine anions (charge for ion is 1-).

The representative particle of an ionic compound is its formula unit (lowest whole number ratio of ions in an ionic compound), for barium chloride is BaCl₂.

b

Explanation:

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.