Bond Angles for Different Molecules - Can Someone Help Me Understand Them?

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SUMMARY

The discussion focuses on the bond angles of various molecules, specifically CF4, NH3, SO4^2-, NH4+, H2S, PO4^3-, HCl, NF3, SiH4, BF3, C2H6, C2H4, and CH2O. The consensus is that CF4, NH3, SO4^2-, NH4+, and PO4^3- have bond angles of 109.5 degrees, while H2S and HCl have angles of 180 degrees. Additionally, NF3, SiH4, BF3, C2H6, C2H4, and CH2O exhibit bond angles of 190.5 degrees. The discussion emphasizes the importance of understanding molecular structure and electron configuration to accurately determine these angles.

PREREQUISITES
  • Understanding of molecular geometry
  • Knowledge of VSEPR (Valence Shell Electron Pair Repulsion) theory
  • Familiarity with electron configuration
  • Basic chemistry concepts regarding bond angles
NEXT STEPS
  • Research VSEPR theory and its application to molecular geometry
  • Study the electron configuration of common molecules
  • Examine the bond angles of other molecular structures
  • Learn about hybridization and its effect on bond angles
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Chemistry students, educators, and anyone interested in molecular geometry and bond angle determination.

hotsexyveronica
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CF4 is it 109.5 degrees for the angle
NH3 109.5 degrees for this angle
SO4^2- 109.5 for this angle
NH4+ 109.5 degrees for this angle
H2S 180 degrees for this angle
PO4^3- 109.5 degrees for this angle
HCl 180 degrees for this angle
NF3 190.5
SiH4 190.5
BF3 190.5
C2H6 190.5
C2H4 190.5
CH2O 190.5
I don't think I am doing these right can someone show me please
 
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Well do you understand the molecular structure or the electron configuration b/c that will help you understand the angles. Also the angle represents the the lowest electron repulsion. You could basically look this up in your textbook...
 
hotsexyveronica said:
CF4 is it 109.5 degrees for the angle
NH3 109.5 degrees for this angle
SO4^2- 109.5 for this angle
NH4+ 109.5 degrees for this angle
H2S 180 degrees for this angle
PO4^3- 109.5 degrees for this angle
HCl 180 degrees for this angle
NF3 190.5
SiH4 190.5
BF3 190.5
C2H6 190.5
C2H4 190.5
CH2O 190.5
I don't think I am doing these right can someone show me please
Please write down the original question EXACTLY as it was given to you. We have no idea what angles you are referring to. Also, show us how you arrive at some of those angles, so we can help/correct you.

Also, HCl has only 2 atoms - there are no bond angles to speak of.
 

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