Arsenic is natural element widely distributed in the earth's crust.
There are two forms of arsenic organic and inorganic.
Symbol: As
Electron configuration: [Ar] 3d¹⁰4s²4p³
Atomic number: 33
Atomic mass: 74.9216 u
Electronegativity: 2.18
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An Organism is the correct answer. It has multiple elements such as H2O or CO2
Answer:
The answer is c
Explanation:
the the immune system protects the body against harmful pathogens by producing special proteins called antibodies.