Tổng số hạt cơ bản của 1 nguyên tử nguyên tố X là 24. viết kí hiệu nguyên tử X

Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.