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The element with atomic number 85 is astatine, symbol At

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โˆ™ 2007-05-19 23:39:38
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Q: What is the chemical element of atomic number 85?
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What is the radius of a astatine atom?

Astatine is a chemical element with the symbol As and atomic number of 85. It has an atomic radius of 145 Angstrom.


What is the atomic number of astaine?

Astatine, chemical symbol At, has an atomic number of 85.


What is the atomic mass number in Rubiduim?

Rubidium is a meta element. Atomic mass of it is 85.


Astatine has 85 protons what is the atomic number?

The atomic number is the number of protons, so the atomic number of astatine is 85.


What element has an atomic mass of 85?

Rubidium


What element has more than 50 but less than 75 protonsand it is in group 17?

That would be iodine with an atomic number of 53. The next group 17 element is astatine with atomic number 85.


What is the atomic number of astatine?

The atomic number of astatine (At) is 85.The atomic weight of At is 210 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 Rb?

Rubidium is a metal element. Atomic mass of it is 85.


What is the atomic mass of rubedium?

Rubidium is a metal element. Atomic mass of it is 85.


What element has a mass number of 85?

Rubidium is a metal element. Mass number of it is 85.


What family does astatine belong to?

Astatine is an element in the periodic table, belonging to group 7.It has an atomic number of 85.


What element has a electron of 85?

The element with the atomic number 85 is Astatine (At). Astatine is a Radioactive Halogen in Group 17(7) of the Periodic Table. Astatine has 85 electrons in 6 shells with 7 electrons in the outer shell. Astatine is the third radioactive element on the Periodic Table.


Is Astatine gas liquid or solid?

it is a SOLID,chemical element with the symbol At and atomic number 85. This radioactive element occurs naturally from uranium-235 and uranium-238 decay. It is the heaviest of the halogens.At room temperature astatine is a solid halogen, nonmetal.


What is the 85th Element?

The element with atomic number 85 in the Periodic Table is Astatine (At). Astatine is the second radioactive element, but is not synthesised. It is part of the Group 17 - Halogens family. It has 85 electrons in 6 shells with 7 electrons in the outer shell.


What nonmetal has the largest atomic number?

That would be Astatine with the atomic number 85.


How many protons does astatine have?

Astatine (At) has an atomic number of 85, therefore has 85 protons. The atomic number may also be referred to as the proton number.


What are some uses for astatine?

Astatine has the chemical symbol At and an atomic number of 85. It is used as a radioactive tracer and in cancer treatment.


If scientists have determined that a neutral atom of rubidium has an atomic number of 37 and a mass number of 85 how many protons neutrons and electrons does the atom have?

Rubidium's atomic number is 37 and atomic number is the same as the protons (37 protons) Protons equal electrons so there is the same number of protons and electrons (37 electrons). The atomic mass of this element is About 85, and protons and neutrons weigh about 1 so you can subtract 37 from 85 to get and 48 neutrons. 37 protons, 37 electrons and 48 neutrons.


Why is astatine a solid?

Astatine is a solid at room temperature because of its intramolecular attraction. It is a chemical that is radioactive with a symbol of At and an atomic number of 85.


Is Astatine At element 85 a metalloid?

Astatine, with the symbol At and the atomic number 85, is usually classified at a metalloid, but this is in dispute. It is sometimes classified as a halogen, and possibly a metal. It is still being studied.


What is the electron configuration for astatine?

The electron configuration for astatine is Xe 4f14 5d10 6s2 6p5. Astatine is the element that has the atomic number of 85 on the periodic table. This element is a halogen.


How many protons and neutrons are in a krypton-85 atom?

The number 85 after krypton is theatomic weightwhich tells you how many protons and neutrons are in the nucleus.The atomic number tells you the number of protons in the nucleus,kryptons atomic number is 36, so thereare 36 protons. To find neutrons subtract the number of protons from the atomic weight, 85 - 36 = 49 neutrons.


What is mass number for rubidium?

Rubidium is a metal element. Mass number of it is 85.


All of the nonmetals for which the atomic number is multiple of five?

Neon has an atomic number of 10.Phosphorus has 15. Bromine has 35. Astatine has 85.


How many protons and neutrons are there in Strotium-85?

strontium (which the atomic number is not 85 its 38) has 38 protons and 50 neutrons... hope this helps!