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francium plus (+) Astatine *
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Is the atomic size of francium greater than that of cesium?
The atomic radius of francium and caesium are considered to be equal.
How many valence electrons does astatine have?
Astatine has 125 neutrons
How was francium named francium?
Francium was named after France, the country it was dicovered in.
What at the common compounds formed by astatine?
what is a common compound of astatine
What is the boiling point of astatine?
The boiling point of astatine is 337 0C.
What does polonium astatine francium uranium thorium and radium have in common?
All these elements are natural radioactive elements.
What elements are more reactive than most?
Caesium and francium, in group one or in group 7 iodine or astatine.
What is the least abundant of the eight rock-forming elements that make up most of the continental crust?
The 3 least abundant elements are Francium (Fr), Astatine (At),and Plutonium (Pu). Francium and Astatine come from the decay of Thorium (Th) and Uranium (U), are much more abundant. At any one time in the entire earth's crust there is only 30 grams of Francium and 25 grams of Astatine. Plutonium is only found in Uranium minerals. The amount of Plutonium is microscopic. Here are the 3 least abundant elements. Lowest 3. 89. Francium 90. Astatine 91. Plutonium
Where would a person bump into francium in everyday life?
Nowhere. Francium is the second rarest element in the Earth's crust, next to Astatine. There is only 20-30g of it in the Earth's crust at any one time.
10 most expensive elements and their uses?
Examples: californium, americium, curium, iridium, rhenium, osmium, palladium, francium, astatine, technetium.
Is the atomic size of francium greater than that of cesium?
The atomic radius of francium and caesium are considered to be equal.
What is the radioactive alkali metal?
Francium name by the Curies after france. Yes it is rare and radioactive.
What state do you predict francium to be in at a room temperature?
Francium should be a solid at standard temperature and pressure, as is cesium, the element next above it in its periodic table column. Note, however, that francium is so highly radioactive that it may be difficult to maintain any actual sample of it at standard temperature and pressure.
What is an element named after frace?
Francium (pronounced /ˈfrænsiəm/, FRAN-see-əm), formerly known as eka-caesium and actinium K,[1] is a chemical element that has the symbol Fr and atomic number 87. It has one of the lowest electronegativity of all known elements, and is the second rarest naturally occurring element (after astatine). Francium is a highly radioactive metal that decays into astatine, radium, and radon. As an alkali metal, it has one valence electron.
What type of element is astatine?
Astatine is an element with the symbol At.
What does At stand for in the periodic table?
Astatine, an extremely rare halogen which no-one really have experienced. It is so rare, that if you dug up the whole crust of the earth, you would find what corresponds to an amount equal of your thumb. It is also highly radioactive, which makes it abit uninteresting chemically.
What is the element francium?
It is one of the two decay products of actinium-227. It decays into astatine-218 approximately 22 minutes after its creation...explaining why there's only about an ounce of it in existence on the earth at any particular moment.
