Which substance is an arrhenius acid?
(1) lif(aq) (3) mg(oh)2(aq)
(2) hbr(aq) (4) ch3cho

Option (2) is the correct answer.

Explanation:

Arrhenius acid are the species that donate a ion or proton.

For example,

Whereas LiF, , and are the substances which do not give a proton upon dissociation. Hence, they are not Arrhenius acids.

Therefore, we can conclude that substance is an Arrhenius acid.

sodium (na), for example, has one electron in its valence shell. this is an unstable state because that valence shell needs eight electrons to be full. in order to fill its valence shell, find a way to add seven electrons to its valence shell

i believe it is 40–40–20%

explanation: