Environment
Thursday, October 11, 2018
What is oxygen? What does this works?
Oxygen
is a
chemical element
with symbol
O
and
atomic number
8. It is a member of the
chalcogen
group
on the
periodic table
, a highly
reactive
nonmetal
, and an
oxidizing agent
that readily forms
oxides
with most elements as well as with other
compounds
. By mass, oxygen is the third-
most abundant element
in the universe, after
hydrogen
and
helium
. At
standard temperature and pressure
, two atoms of the element
bind
to form
dioxygen
, a colorless and odorless
diatomic
gas
with the formula
O
2
. Diatomic oxygen gas constitutes 20.8% of the
Earth's atmosphere
. As compounds including oxides, the element makes up almost half of the
Earth's crust
.
https://www.blogger.com/blogger.g?blogID=1700335734760397937#editor/target=post;postID=3678362996519987327
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