Step 1: Understanding the Concept
The nitrite ion is an ambident nucleophile that can attack through nitrogen or oxygen.
Step 2: Role of silver nitrite
\(\text{AgNO}_2\) is mainly covalent, so the nitrogen lone pair is available and attacks the carbon of the alkyl halide.
Step 3: Product
\(R-X+\text{AgNO}_2\rightarrow R-\text{NO}_2+\text{AgX}\). This gives a nitroalkane.
Final Answer:
Alkyl halides give nitroalkanes with silver nitrite.
\[ \boxed{\text{(A) }\text{Nitroalkanes}} \]