Osmium is rare
Zinc is a common element.
Common compounds oxygen :- hypofluorous,ozonides,superoxides,oxygen difluoride,dioxygen difluoride,dioxygenyl
the most common oxidation number for oxygen is -2.
The element is common, however; this does not imply a particular molecule is common- such as diatomic fluorine.
no it is very common
An opossum is NOT rare, it is a common animal.
common minerals are not rare minerals eg:not rare
Osmium is rare
rare
Argon is rare.
gold is rare
common
common
common
Common
common