Question

: Pico means
(A)${10}^{-9}$
(B)${10}^{-12}$
(C)${10}^9$
(D)${10}^{12}$

Answer 1

Hint: Pico is a unit prefix in the metric system denoting a factor of 10−12.

Complete step-by-step answer:
Pico is a measuring unit which is equal to${10}^{-12}$.
It denotes one trillionth. It is a unit prefix in the metric system and denoted by p.
Pico meter is equal to ${10}^{-12}$.
Hence, option (B) is correct option.
Additional information:
A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or sub multiple of the unit.
All metric prefixes used now a today’s are decadic. Each prefix has a unique symbol that is used as a prefix to any unit symbol.
Other units in metric system are
One nano (n) is equals to${10}^{-9}$ .
One micro (μ) is equals to${10}^{-6}$ .
One milli (m) is equals to${10}^{-3}$ .
One centi (c) is equal to${10}^{-2}$ .
One deci (d) is equal to${10}^{-1}$.
One deca (da) is equal to${10}^1$ .
One hecto (h) is equal to${10}^2$.
One kilo (k) is equal to${10}^3$.
One mega (M) is equal to${10}^6$ .
One giga (G) is equals to${10}^9$.
One tera (T) equals to${10}^{12}$.
Decimal multiplicative prefixes have been a feature of all forms of the SI prefix of the metric system and the metric prefix is also sometimes used with non-metric units.

Note:
Smaller than Pico is femto ${10}^{-15}$ and greater than Pico is Nano ${10}^{-9}$
Pico meter is used for the length measurements of small order. It has wide application in particle physics, quantum physics, quantum chemistry, acoustic etc.
Some examples, Diameter of atom is in between 62 to 520 pm, carbon-carbon single bond length is 154pm in length, etc.