The question is down bellow, please help !

A. It has one carbon atom

D. It has two oxygen atoms

E. It is a chemical compound

Hope this helps!

The answers are A D and E

Explanation:

Because by looking at it you can tell they CO2 has one carbon atom and two oxygen atoms. It is also a chemical compound because it contains two elements.

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.

what is the question here. i think you messed up.