All alkali metals dissolve in anhydrous liquid ammonia to give blue colour solution. It is the ammoniated electron which is responsible for the blue colour of the solution, and the electrical conducti

Question

All alkali metals dissolve in anhydrous liquid ammonia to give blue colour 
solution. It is the ammoniated electron which is responsible for the blue colour
of the solution, and the electrical conductivity is due to the ammoniated 
cation, [M(NH3)x]+ as well as the ammoniated electron, -, values of x and y 
depend on the extent of solvation by NH3. Dilute solutions are paramagnetic due 
to free ammoniated electrons.

Prashant Kotian · Accepted Answer

Correct answer: B. Step 1: Sodium bicarbonate (NaHCO3) is an ionic compound composed of sodium cations (Na+) and bicarbonate anions (HCO3-), which are held together by ionic bonds. Step 2: Inside the polyatomic bicarbonate anion, the hydrogen, carbon, and oxygen atoms are linked through covalent bonds. In the solid crystal lattice, these bicarbonate units are further held together by intermolecular hydrogen bonding. Step 3: Consequently, all three types of bonds (ionic, covalent, and hydrogen bonds) are present in sodium bicarbonate, making option (d) the correct choice.

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