Why did dalton think it was important to use his system of symbols for the chemical elements?
to remind people that atoms were real
to remind people that he discovered atoms
to remind people that he came up with the atomic theory of matter
all of the above

the answer is a

Explanation:

i did the assignment and the correct answer is a. (i put b bcos other ppl here said its b but i got it wrong)

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.