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Helium, the noble gas with the smallest atoms.

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Astatine is the least active halogen. It is a rare and highly unstable element, with limited applications due to its scarcity and radioactivity.

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Astatine

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Q: What is the least active halogen?
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Related questions

What halogen is most active?

Fluorine


The most active of all the chemical elements is a halogen known as?

The most chemically active element is the halogen known as fluorine. Be


What is the most active member of the halogen family?

Fluorine is the most active member of the halogen family because it has the highest electronegativity and is highly reactive, readily forming compounds with other elements.


Which of these groups of metals is the most active alkaline earth alkali halogen coinage?

The alkali group of metals is the most active.


What halogen has the least attaction for electrons?

Iodine has more radius. It has least attraction for electron.


Is bromine chemically active or inactive?

Bromine is chemically active. It is a halogen and readily forms compounds with other elements, making it reactive in chemical reactions.


What is the most active chemical element known as halogen?

Fluorine is the most active halogen. It is highly reactive and can form compounds with almost all other elements.


What happens when you combine an active metal and a halogen?

When an active metal (such as sodium or potassium) is combined with a halogen (such as chlorine or fluorine), they undergo a redox reaction to form an ionic compound known as a metal halide. This reaction is often highly exothermic and can be violent if not controlled properly due to the high reactivity of both the metal and the halogen.


Halogen with the least-negative electron affinity?

The halogen with the least-negative electron affinity is astatine. Electron affinity and electronegativities decreases down a group. Since astatine is the last halogen located in Group 17 as you move down the column from fluorine, it has the least negative electron affinity.


What is the closest comparison to determine if a 10 watt halogen bulb will be enough light in outdoor lighting?

No, it will not be. You will need at least a 50 watt halogen for outdoor lighting.


Which floor lamp will tip over the least?

The Halogen Pharmacy Lamp has a no tip base.


An active metal and halogen react to form a?

A metal and halogen react to form an ionic bond in which the metal gives an eletron to the halogen Most basic example would be table salt NaCl NaOH + HCl = NaCl + H20