Answer:
6.307 ×

Step-by-step explanation:
When you split the number 6307 into a coefficient and a power of 10 you do get 6307 in exponential form, but there is an indefinite number of possibilities.
As you probably want 6307 in normalized scientific notation, the coefficient or significand of 6307 must be in the interval [1,10[.
In other words, the coefficient has to be equal to or greater than 1 (≥1), and less than 10 (<10).
Therefore:
6307 = 6.307 × 103.