An ion of oxygen has a charge of -2. how many protons, neutrons, and electrons does the atom have? ●An ion of potassium has a charge of +1. How many neutrons, protons and electrons does this ion have? protons electrons
●An ion of oxygen has a charge of -2. how many protons, neutrons, and electrons does the atom have?

Which scientists contributed to the determination of how cfcs in clouds in the upper atmosphere could destroy ozone molecules

In november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.

Why is it that 85.48 rounded to two significant figures is 85 and not 86?