TMS stands for Tetramethylsilane
Formula : Si(CH₃)₄
It is used as internal standard for chemical shift
In TMS all the four methyl groups are similar thus all the 12 hydrogen are chemically equivalent. They will show proton NMR at same level and which will appear as a singlet.
We have defined this singlet to be as reference set as zero.
Generally the other organic compounds show chemical shift downfield.So have positive chemical shift with respect to TMS shift.
After a good long amount of research, I found that the scientific answer to this question would be a big ol’ dink
Answer:
From the periodic table, Atomic number of fluorine is 7 and atomic mass is 19
There is 213 units i believe hope so
So that other scientist can repeat their experiments
i hope i got i right
