Reactivity in halogens and alkali metals?

Answer 1

They are extremely reactive. When combined with water they oxidize and release hydrogen gas and lots of heat. Their outer shell of electrons is very weakly held on and so they can easily ionize to 1+ state.

Answer 2

Alkali metals often react violently especially so with substances such as water, halogens or Group 6 elements. This is due to their lone electron occupying the outermost shell (or s-orbital if you will) facing a low effective nuclear charge and thus, only weakly attracted to the nucleus. Therefore, it is easily lost to other compounds with a high electronegativity (tendency to attract/accept electrons) such as chlorine and fluorine, resulting in an exothermic reactions. In the case of water, any alkali metal M will react with water according to 2M(s)+2H2O(l)=2MOH(aq) + H2(g). For reactions with halogens (denoted as 'H'), it is M(g)+ H(g)-> MH(s)

Answer 3

Both groups react heavily. Especially alkali metals. If you want some fun, go watch YouTube at the subject sodium in water, potassium in water, or cesium in water.

Halogens can do quite some damage in sufficient quantities.

Answer 4

Halogens are highly reactive nonmetals that readily gain an electron to achieve a full valence shell, forming ions with a -1 charge. Alkali metals are highly reactive metals that readily lose an electron to achieve a full valence shell, forming ions with a +1 charge. This reactivity is due to their respective tendencies to achieve a stable electron configuration.

Answer 5

It is the electron configuration. It is depend on it.

Answer 6

they are highly reactivated. more than other metals.

Answer 7

The reactivity on any element depends on its valence electrons. The Alkali metals have one valence electron. They tend to donate it to another element to be the +1 ion.

Answer 8

They are highly reactive.