To convert the number 1.98 into scientific notation, you write it as a product of a number between 1 and 10 and a power of 10.
Since 1.98 is already between 1 and 10, it can be expressed in scientific notation simply as:
\[ 1.98 \times 10^0 \]
The exponent is 0 because you are not moving the decimal point. Thus, the scientific notation for 1.98 is:
\[ 1.98 \times 10^0 \]