Question

Объясните, почему водородное соединение фосфора менее прочное, чем водородное соединение азота?

Answer 1

Фосфор наиболее электроотрицателен

Answer 2

Explanation of the Difference in Strength between Phosphorus and Nitrogen Hydrogen Compounds

When comparing the strength of hydrogen compounds of phosphorus and nitrogen, it's important to consider their respective chemical properties and bonding characteristics.

Phosphorus Hydrogen Compound: - Phosphorus forms a hydrogen compound known as phosphine (PH3). - Phosphine is a colorless, flammable, and toxic gas at room temperature and pressure. - The phosphorus-hydrogen bond in phosphine is weaker compared to the nitrogen-hydrogen bond in ammonia due to the larger size of phosphorus atoms and the lower electronegativity of phosphorus compared to nitrogen.

Nitrogen Hydrogen Compound: - Nitrogen forms a hydrogen compound known as ammonia (NH3). - Ammonia is a colorless gas with a characteristic pungent smell at room temperature and pressure. - The nitrogen-hydrogen bond in ammonia is stronger compared to the phosphorus-hydrogen bond in phosphine due to the smaller size of nitrogen atoms and the higher electronegativity of nitrogen compared to phosphorus.

In summary, the difference in strength between the hydrogen compounds of phosphorus and nitrogen can be attributed to the size and electronegativity differences between the two elements, leading to variations in the bond strength of their respective hydrogen compounds.

I hope this explanation helps! If you have any further questions or need additional information, feel free to ask.