The picometre is one thousand femtometres, one thousandth of a nanometre ( nm), one millionth of a micrometre (also known as a micron), one billionth of a millimetre, and one trillionth of a metre. The symbol μμ was once used for it. It is also one hundredth of an ångström, an internationally known (but non-SI) unit of length.
The picometre is one thousand femtometres one thousandth of a nanometre ( nm) one millionth of a micrometre (also known as a micron) one billionth of a millimetre and one trillionth of a metre The symbol μμ was once used for it It is also one hundredth of an ångström an internationally known (but non-SI) unit of length