Oxygen usually has a -2 charge as it is a group VI nonmetal. Most of the elements in group VI have -2 charges when they form ions.
5
Liquid density at boiling point (90 K) is 1.141 g·cm−3
the atomic weight is 15.9994
Oxygen is in the second period.
3
because the arrangement of the oxygens in the crystal structure sets the energy difference between a molecular orbital energy level and its excited state to correspond to that wavelength of light. If you change the orientation of the oxygens, change the number of oxygens or change the ligands to something altogether different, the difference in molecular orbital energy levels will also change. The new energy difference will correspond to a new color.
2-
it has no oder .
Oxygen is in p block. it is a useful gas. oxygens atomic number is 8.
O2
Colourless gas
a gas
5
Liquid density at boiling point (90 K) is 1.141 g·cm−3
One.
There are 3 oxygens
2