Blockchain Developer Certification Practice

What is the smallest amount of Wei that can exist?

1. 0

2. 1

3. 0.1

4. 10

The correct answer is: 1

Wei is the smallest denomination of ether, which is the native cryptocurrency of the Ethereum blockchain. In the Ethereum network, ether is often measured in various units, with Wei being the smallest unit. One Ether is equivalent to 10^18 Wei, meaning that the smallest quantifiable amount of Ether is 1 Wei. This unit's inherent nature is such that it represents the most granular division possible within the Ethereum framework. Since it is not possible to have a fractional amount of Wei (i.e., having less than 1 is not feasible, as there is no unit smaller than Wei), the correct answer is that the smallest amount of Wei that can exist is indeed 1. The other options like 0, 0.1, and 10 do not accurately reflect the smallest possible amount in the context of Wei. Zero could imply the absence of any currency, which doesn't adhere to the definitions of currency denominations. Similarly, 0.1 and 10 are simply larger amounts than 1 and do not define the smallest unit of measurement in the context of Wei within the Ethereum system.