The answer is F, or Fluorine.
Because of Fluorine's high reactivity, it is never found in nature.
The answer is F.
Answer:
an isotope consists of two or more forms of the same elements that contains equal number of protons but different number of neutrons in their nuclei but differ in relative atomic mass but not in chemical properties
The percentage of soil components of the soil is: inorganic components
-soil particles
-mineral elements = 45%
-water or moisture= 25%
- air= 25%
organic components
-humus or decayed organic matter= 5%
-living organisms
Approximately 119.4 g, you take the mass on the periodic table of each element and add the numbers up
Trilobites are more common than Sea urchins
