Question

The picometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: pm) or picometer (American spelling) is a unit of length in the metric system, equal to 1×10−12 m, or one trillionth (1/1000000000000) of a metre, which is the SI base unit of length.

Picometre

A simplified representation of a helium atom, having an estimated (calculated) diameter of 62 picometres[1]

General informationUnit systemmetricUnit oflengthSymbolpm Conversions1 pm in ...... is equal to ...   SI units   1×10−12 m   Natural units   6.1877×1022 ℓP
   1.8897×10−2 a0   imperial/US units   3.9370×10−11 inLook up picometre in Wiktionary, the free dictionary.

The picometre is one thousandth (1/1000 × nm) of a nanometre, one millionth of a micrometre (also known as a micron), and used to be called micromicron, stigma, or bicron.[2] The symbol μμ was once used for it.[3] It is also one hundredth of an Ångström, an internationally recognised (but non-SI) unit of length.

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Answer 1

Answer:

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