Because the spectrum of the star's light can be seen to have dark lines all the way through, and each element has its own set of dark lines in the star's spectrum.
Thorium can be separated from other elements by solvent extraction with tributylphosphate.
Neptunium is an individual element; isotopes of neptunium are not separated.
No. If two elements can be separated by a physical process then they are simply mixed.
Compounds can be separated into their constituent elements only by a decomposition reaction.
the ease with which the elements can be separated.
An ELEMENT can not be separated into other elements.
Yes, elements can be separated by chemical means through techniques like electrolysis, fractional distillation, or precipitation. These methods exploit differences in properties such as boiling point, solubility, or reactivity to separate elements from a mixture.
R2-D2 was separated by the Ewoks.
Zinc*
A compound, such as water (H2O), cannot be physically separated into its component elements (hydrogen and oxygen) but can be chemically separated through a chemical reaction, such as electrolysis, which breaks the bonds between the elements.
If you think to the elements existing in a compound they can be separated by the intermediate of chemical reactions.
Hydrogen and helium are the most abundant elements in a star.