\(5.20 \times 10^{(5)}\)
Explanation
To express 520,000 in scientific notation, start from the end of the number and move the decimal left until you are to the immediate right of the first number (5), counting the number of moves. Moving the decimal left, placing it between the 5 and the 2, equals 5 moves. The number 10 is then raised to the power of \(5=10^{5}\) . So the answer becomes \(5.2 * 10^{5}\).