1.Which is the largest atom in Group 1? 2.Which is the smallest atom in Group 15

3.Which is the smallest atom in period 5?

4.Which is the largest atom in Period 4?

All motion is caused by force? true or false

Which property of water causes water drops to bead on a freshly waxed car?

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.