In a resonance structure for the phosphate ion, PO3−4, there is one P=O and three P−O. What is true about the bonding in the resonance hybrid of phosphate ion?

Which type of orbits are found in the principal energy level n = 2 a - s b - s, f c - s, d d - s, p e - s, p, d

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

Scientists often 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 of these numbers in an alternate form.