Evaluate a correction
Please evaluate new questions and changes proposed by other users.
Each change needs to be accepted by three users before it is applied.
If a proposal is misspelled or a faulty translation, but generally a nice question - please correct it rather than downvote.
Which of the following is the smallest unit of length?
nanometer
yoctometre
picometre
femtometre
Yocto is a unit prefix in the metric system denoting a factor of 10−24 or 0.000000000000000000000001. It was adopted in 1991 by the General Conference on Weights and Measures. It comes from the Latin/Greek octo (οκτώ), meaning "eight", because it is equal to 1000−8. Yocto- is the smallest official SI prefix.
reach: rather globalchemistrymathematicsphysicsscience
Which of the following units of length has the smallest prefix?
nanometre
quectometre
picometre
yoctometre
Quecto- (q) is a unit prefix in the metric system denoting a factor of 10^(-30) or 0.000000000000000000000000000001. It was adopted in 2022 by the 27th General Conference on Weights and Measures. It comes from q + the Latin "Decem" due to being 1000^(-10) + -to to match from femto- downwards. Quecto- is the smallest official SI prefix.
reach: rather global
chemistrymathematicsphysicsscienceunitsThe voting is finished when +3 or -3 is reached.
Your vote:
Current votes: +1
+1: This change is good Richard1
Answers by country
nanometer
yoctometre
picometre
femtometre
answers
the Netherlands12
Australia24
the United States70
Greece14
India115
Germany106
Poland1500
Austria24
the United Kingdom43
Nigeria17
Pakistan10