What is the structure of NaN3? Why is N2 gas, and P solid at STP?

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Discussion Overview

The discussion revolves around the structure of sodium azide (NaN3) and the states of nitrogen and phosphorus at standard temperature and pressure (STP). It includes inquiries about molecular structures, bonding theories, and intermolecular forces.

Discussion Character

  • Exploratory
  • Homework-related
  • Technical explanation

Main Points Raised

  • Some participants propose that the structure of NaN3 may be represented as [N=N=N]^- Na^+, but there is uncertainty regarding the bonding described by valence bond (VB) theory or molecular orbital (MO) theory.
  • There is a request for clarification on the 3D crystal structure of NaN3.
  • Participants express difficulty in understanding the states of nitrogen and phosphorus, with one noting a lack of relevant deductions regarding their molecular existence.
  • Questions are raised about the types of intermolecular forces present between nitrogen and phosphorus, with a suggestion that van der Waals forces may be involved.
  • One participant speculates that the larger size of phosphorus molecules could contribute to stronger van der Waals forces compared to nitrogen.

Areas of Agreement / Disagreement

Participants do not reach consensus on the bonding in NaN3 or the reasons for the differing states of nitrogen and phosphorus at STP. Multiple viewpoints and uncertainties remain regarding the intermolecular forces and molecular structures.

Contextual Notes

Limitations include unresolved questions about the bonding theories applicable to NaN3 and the specific nature of intermolecular forces between nitrogen and phosphorus.

MalayInd
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Here are the two questions:
1)What is the structure of NaN3?
2)Why is nitreogen gas whereas phosphorus is solid?


Keep Smiling
Malay
 
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1. [N=N=N]^- Na^+ (I goggled this.)
2. I don't know.
 
Thanks.
What is the crystal structure, or what is the 3D structure.

Keep Smiling
Malay
 
Malay, when I answered your first question, it was before this thread was moved to the homework help area. In this area, we are requested not to give out answers, but to help you to find the answer yourself. What steps have you taken to find an answer, and what progress have you made?
 
1)I was not able to find the bonding in NaN3 either by VB theory or by MO theory, but I guessed that it should be ionic and hence should have crystal structure.
2)I studied about existence of nitrogen molecules and phosphorus molecules but could not deduce anything relevant to the question.

Keep Smiling
Malay
 
What kind of intermolecular forces exist between Nitrogen and Phosphorous? Is it Van Der Waal? Permanent Dipoles? Ionic?
Well, i'll answer that... It's van der waal foces...
but what is the difference between these two molecules? of how much atoms does nitrogen consists and of how much atoms does phosphorous consist in one molecule?

If phosphorous exists in solid state, therefore, its van der waal forces should be stronger... what causes this? what increases the van der waal forces?
 
I think taht large size of the phophorus molecule may increase the van der waals forces.

Keep Smiling
Malay
 

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