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How many picometers (pm) are equivalent ...

How many picometers `(pm)` are equivalent to `0.48 Å`?

A

`84`

B

`8.4`

C

`8.40`

D

`8400`

Text Solution

Verified by Experts

The correct Answer is:
A
Use the relations `1 Å = 10^(-10)m` and `1 "pm" = 10^(-12) m`.
Follow the sequence `Å rarr m rarr "pm"`
`(0.84 Å) xx ((10^(-10) m)/(1 Å)) xx ((1 "pm")/(10^(-12) m)) = 84 pm`
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