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It is the element first created in 2009 Ununseptium, (Uus), with the atomic number of 117 and a standard atomic weight thought to be 294. The name, which simply refers to its atomic number, is a temporary one as at the time of posting this reply (end 2015)..

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8y ago
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5mo ago

Astatine is the last halogen in the Periodic Table. It is a highly radioactive element and is rare in nature.

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Q: What is the last halogen?
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Related questions

How long does a halogen light bulb last for?

Halogen light bulbs typically last around 2,000 to 4,000 hours, depending on usage and quality.


How long does a halogen light bulb last?

Any where from 3000-6000 hours :)


How do you fix a halogen heater?

buy another one but remember they never last for a complete year!


Which of these is a halogen fluorite gypsum iodine galena?

Iodine is a halogen element. Fluorite is a mineral, not a halogen. Gypsum is a mineral, not a halogen. Galena is a mineral, not a halogen.


What element has less than one halogen existing on the earth?

Any element, other than a halogen is - by definition - not a halogen and so it does not have a halogen and that is less than one halogen.


Is I a halogen?

Yes, I (iodine) is a halogen.


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This halogen is astatine.


The element bromine is not a halogen?

No, Bromine is a Halogen


What gas is found in halogen lamps?

Halogen.


What gas is a halogen filled with?

Halogen is a gas, so your question doesn't make much sense. If you're asking about a halogen (light) bulb, then the answer is: mainly halogen.


What type of gas is in a tungsten-halogen light bulb?

Halogen gas is in a Tungsten-Halogen Light Bulb.


What is the only liquid halogen?

Bromine is the only liquid halogen at room temperature.