The unknown elements are... well, unknown. However, it seems unlikely that there are 100 elements in addition to the known elements, for stability reasons: in generalm terms, the heavier the nucleus, the more unstable it becomes.
There are 92 natural elements, but there are more than 100 elements if included synthetic ones.
There are 118 known chemical elements as of 2011.
It is currently unknown. We all having a feeling that she will( i hope not) but is is more than likely. She is in a coma now.
Studying residues of uranium ores, Marie Curie and Pierre Curie found that these residues are more radioactive than uranium; they attributed this radioactivity to unknown elements. They isolated these elements and named these elements polonium and radium.
The answer to that is currently unknown.
Studying residues of uranium ores Marie Curie found that these residues are more radioactive than uranium; she attributed this radioactivity to unknown elements. She isolated these elements and named these elements polonium and radium.
Studying residues of uranium ores Marie Curie and Pierre Curie found that these residues are more radioactive than uranium; they attributed this radioactivity to unknown elements. They isolated these elements and named these elements polonium and radium.
No, there are more elements than compounds. Elements are the building blocks of compounds, which are formed when elements combine in specific ratios. The vast majority of matter in the universe is made up of elements.
Studying residues of uranium ores Marie Curie and Pierre Curie found that these residues are more radioactive than uranium; they attributed this radioactivity to unknown elements. They isolated these elements and named these elements polonium and radium.
Studying residues of uranium ores Marie Curie and Pierre Curie found that these residues are more radioactive than uranium; they attributed this radioactivity to unknown elements. They isolated these elements and named these elements polonium and radium.
There are far more compounds than elements: Fewer than 200 elements and many million distinct compounds.
Elements with more than 92 protons are called Transuranic elements.