For nitrogen trifluoride

Now, what kind of dipole moment would we expect for nitrogen trifluoride, NF3, which, like ammonia, is pyramidal Fluorine is the most electronegative element of all and should certainly pull electrons strongly from nitrogen the N—F bonds should be highly polar, and their vector sum should be large—far larger than for ammonia with its modestly polar N—H bonds. 

CGA G-14 Code of Practice for Nitrogen Trifluoride (EIGA Doc. 92 03) CGA P-1 Safe Handling of Compressed Gases in Containers... 

Write the Lewis structure for nitrogen trifluoride (NF3) in which all three F atoms are bonded to the N atom. 

TEMPERATURE Degrees Fahrenheit Fig. 1. Vapor pressure curve for nitrogen trifluoride. 

ACGIH recommends a Threshold Limit Value-Time-Weighted Average (TLV-TWA) of 10 ppm (29 mg/m ) for nitrogen trifluoride. The TLV-TWA is the time-weighted average concentration for a normal 8-hour workday and a 40-hour workweek, to which nearly all workers may be repeatedly exposed, day after day, without adverse effect [1]. 

All cylinders authorized for nitrogen trifluoride must be requalified every 5 years in accordance with the requirements of 49 CFR 173.34 and CAN/CSA B339 [4, 7]. 

The standard valve outlet connection for nitrogen trifluoride cylinders in the United States and Canada is Connection CGA 330. [7]... 

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