Elements and similar type of reaction

[sami23]

Potassium reacts with Chlorine to produce the ionic solid potassium chloride (KCl). Which elements would you predict would react with Iodine in a similar type of reaction?

I know that K has a +1 charge and Cl has a -1 charge.

Iodine has a -1 charge and all the elements in column 1A have a +1 charge.

I deduced that Cesium has a similar type of reaction when combined with Iodine but are there any other elements that would produce a similar reaction?

 

[chemisttree]

What led you to Cesium and not the other Group I metals?

 

[sami23]

The atomic mass of K = 39.098 and Cl = 35.453
I = 126.904 and proportionally Cs = 132.905

 

[Borek]

What kind of product will you expect from reaction between sodium and iodine? Lithium? Any group I metal? Aren't they similar?

 

[sami23]

I guess I would include elements: Li, Na, K, Rb, Cs, and Fr but I'm not sure about Hydrogen which is not an alkali metal. Is that correct?

 

[Ygggdrasil]

The actual atomic mass of atoms does not really have too much of an effect on their reactivity*. Chemical reactions involve atomic/molecular orbitals, so the electrons are the really important part. Atomic mass is important only insofar as it affects the number of electrons that the atom has.

*This is not true for hydrogen and other sufficiently light atoms where certain quantum effects become important.