Answer will mark bl plz

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.

Ground state electron configuration for element v

Amatch has about 21 milligrams of red phosphorus coating the tip. how many atoms of phosphorus is this?