It is indeed. Nano as a prefix means 1/1000000000 (one billionth). Whereas milli just means one thousandth. So in fact there are 1,000,000 nanograms in a milligram
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Nano = billionth Milli = thousandth so clearly, a milligram is bigger.
none a milligram is less than a gram
Pictogram is a unit of measurement much less than a milligram.
1mcg (microgram) is 1,000 times smaller than 1mg (milligram).
milli means 1 thousandth, 1/1000. 1 x 10-3 g micro means 1 millionth, 1/ 1000000. 1 x 10-6 g What is meant by a micro milligram? A millionth of a milligram? That is 1 x 10-9 g. A nanogram.