Question

what is polonium and who found it​

Answer 1

Polonium is a chemical element with the symbol Po and atomic number 84. Polonium is a chalcogen. A rare and highly radioactive metal with no stable isotopes, polonium is chemically similar to selenium .It was discovered by Marie Curie and Pierre Curie

Answer 2

$\bold { \red{POLONIUM: }}$

• Polonium is an alpha-emitter, and is used as an alpha-particle source in the form of a thin film on a stainless steel disc.
• These are used in antistatic devices and for research purposes.
• A single gram of polonium will reach a temperature of 500°C as a result of the alpha radiation emitted.
• This makes it useful as a source of heat for space equipment.
• It can be mixed or alloyed with beryllium to provide a source of neutrons.
• It is highly toxic due to its radioactivity.
• Polonium is a very rare natural element.
• It is found in uranium ores but it is uneconomical to extract it.
• It is obtained by bombarding bismuth-209 with neutrons to give bismuth-210, which then decays to form polonium.
• All the commercially produced polonium in the world is made in Russia.

$\bold { \red{FOUNDER: }}$

Discovered by: Marie Curie

Discovery year: 1898

• Polonium was discovered in July 1898 by Marie and Pierre Curie, when it was extracted from the uranium ore pitchblende and identified solely by its strong radioactivity: it was the first element to be so discovered.
• Polonium was named after Marie Curie's homeland of Poland.
• It is extremely dangerous to humans.