Answer : The correct option is, (1) synthesis
Explanation :
Synthesis reaction : A type of chemical reaction in which multiple reactants combine to form a single product.
It is represented as,
[tex]X+Y\rightarrow XY[/tex]
Decomposition reaction : A type of chemical reaction in which a single reactant decomposes into two or more products.
It is represented as,
[tex]XY\rightarrow X+Y[/tex]
Single replacement reaction : A type of chemical reaction where the more reactive element replace the less reactive element.
It is represented as,
[tex]A+BC\rightarrow AC+B[/tex]
(A is more reactive element and B is less reactive element)
Double replacement reaction : A type of chemical reaction in which a positive cation and a negative anion of two reactants exchange their places to form two new products.
It is represented as,
[tex]AB+CD\rightarrow AD+CB[/tex]
(A and C are the cations, B and D are the anions)
The given balanced reaction is,
[tex]6Li+N_2\rightarrow 2Li_3N[/tex]
The given reaction is an example of synthesis reaction in which lithium combine with the nitrogen to form a single product as lithium nitride.
Hence, the correct option is, (1) synthesis reaction
