Answer:
to preserve the integrity of the wildlife refuge, ecosystems and the endangered species.
Explanation:
A national park service manages
We call these reactive elements, becausethese atoms really like to follow the buddysystem and form bonds with other atoms.Noble gases, however, don't have thisproblem. Their outer shells are filled to the max, so they don't need to bond or react with any other atoms.
Main group elements
transition metals
lanthanides
actindes.
Answer:
Chromium
Explanation:
Cr has 24 atomic number and mass number 52