Answer
No, the number is not in scientific notation.
Work Step by Step
A number in scientific notation is written as the product of two factors in the form $a×10^n$, where $n$ is an integer and $1\leq |a| <10$.
The number $0.9\times10^{-2}$ does not meet these criteria, as $0.9$ is not between $1$ and $10$.
