The atomic number for oxygen is 8 and the mass number is 15.994 it's period number is 2 and Oxygen is in group 16 and belongs to the oxygen family,it's state of matter is gas and it's a non-metal.
Oxygen is in air something that we need and use everyday.
They use oxygen in acids used in some labs for chemicals and in some of our food.
Air used to mine rocks
Some mining companies use machines containg compressed air to destroy rocks.