Answer:
quantity of one substance is false
Explanation:
not all the substances would have the same chemical reaction
They are all together because they are all alkali metals.
Essentially they are silvery and can be cut with a plastic knife.
Their physical properties:
- shiny
- soft
- silvery
- highly reactive at standard temperature and pressure
- readily lose their outermost electron to form cations with a charge of +1
Their chemical properties:
- Alkali metals are highly reactive at standard temperature and pressure and readily lose their outermost electron to form cations with charge +1.
- All the discovered alkali metals occur in nature.
- Most alkali metals have many different applications, such as rubidium and caesium atomic clocks, sodium-vapor lamps, and table salt.
I had this same question a while back, so I may not be right, but I'm pretty sure it's D. None of the above.
The formula unit equation for the given reaction occurring in water is
CaS(aq) + FeBr₂(s) → FeS(s) + CaBr₂(aq).
<h3>What is chemical reaction?</h3>
Chemical reactions are those reaction in which reactant molecules react with each other for the formation of product.
When calcium sulfide reacts with iron (II) bromide for the formation of iron(II) sulfide and calcium bromide will be represented through the following equation:
CaS(aq) + FeBr₂(s) → FeS(s) + CaBr₂(aq)
Above reaction best explains the formula unit of given reaction as all valency of atoms are satisfied there.
Hence, the required formula unit is CaS(aq) + FeBr₂(s) → FeS(s) + CaBr₂(aq).
To know more about chemical reactions, visit the below link:
brainly.com/question/26018275
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