answersLogoWhite

0


Best Answer

It is for the indication of its Atomic Mass usually it is written at the superscript of its symbol Po as 84Po209

User Avatar

Wiki User

14y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What does the number -209 before polonium mean?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is the mass number of polonium?

Polonium is a metal element. Atomic mass of it is 209.


How many neutrons and protons in polonium 209?

84 protons, 84 electrons and 136 neutrons.


Explain how polonium -209 and polonium -211 are similar?

209Po and 211Po are isotopes of polonium. 209Po and 211Po have the same number of protons and electrons, also the same atomic number; the number of protons is of course different. The two isotopes are radioactive.


How many protons neutrons and electrons are in polonium?

Polonium has 84 protons and electrons; the number of neutrons is different for each isotope: Number of neutrons = Atomic mass of an isotope - Atomic number of polonium (84)


What is the atomic mass of polonium?

The standard atomic weight of polonium is [210], after IUPAC rules.


What is the atomic weight for polonium?

The atomic number of polonium is 84.The atomic weight of Po is 209 grams per mole.See the Web Links to the left of this answer for a periodic table with more information about this element!


What is the atomic mass of polonuim?

Polonium is a metal element. Atomic mass of it is 209.


What is the atomic mass of poloniun?

Polonium is a metal element. Atomic mass of it is 209.


What is the slogan for the element polonium?

Po is the symbol for polonium. It was discovered by polish Chemist and Physicist Marie Curie in 1898, and she named the element in honor of her country. It has an atomic number and atomic mass of 84 and 209 u respectively.


How polonium made by humans?

The most used nuclear reaction to obtain polonium is:Bi-209 + n------------Bi-210----------Po-210


Where is polonium found and how is it obtained?

The most common reaction to obtain polonium is;Bi-209 + n------------Bi-210-----------------Po-210 + e-


How is polonium extracted from the ground?

Now polonium is not extracted from uranium ores; polonium is more simple prepared by nuclear reactions.