The same number of protons (the atomic number),(the number of neutrons in the nucleus may differ from atom to atom ) The fact that atoms of an elemnt have the same number of protons means that in the neutral atom the number of electrons is the same - and therefore the chemistry is the same.
carbon
One element all the 13 colonies had in common was the ability to practice their religion freely.
One atom must be one and only one element (radioactivity allows an atom to change from one element into another, but it can still only be one element at a time). One element can have any number of atoms, though certain combinations are common: all of the elements that are gases at room temperature (that aren't noble gases) exist as diatomic molecules.
Read your governing documents to determine the list of common elements, i.e., real estate assets that all owners own in common.
Carbon
The nutrient that contains nitrogen are plant nutrients. Nitrogen is one common element in all plants.
No. The most common isotope(s) of an element are often stable.
The most common element in all combustible fuels is Hydrogen, this is closely followed by the presence of Carbon.
One common one is carbon; it is not the only one.
Common Sense.
nitrogen
Water is not an element. The element that is most present in the atmosphere is Nitrogen at about 70% (Oxygen is about 20%). I don't know about the most common element in the earth's crust though. I'd say that the most common element overall is Carbon (since all life is carbon based)