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The electrons determine the reactivity. How many valence electrons there are. It is easier to lose one electron rather than three, so an element with one valence electron will be more reactive than one with three.

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13y ago
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13y ago

An element's reactivity depends upon its ability to loose electrons which in turn depends upon its ionisation enthalpy.While moving down the group in a Periodic Table reactivity increases while it decreases when one moves from left to right due to this factor.

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8y ago

The number of electrons are in the valence shell apex:P

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Q: What determines an element's reactivity?
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Related questions

Which determines the reactivity of the elements?

Roughly, first ionization potential and electron affinity.


The number of electrons determines what of an element?

The number of loosely held electrons determines the reactivity of an element. Other elements attract electrons and will react also.


What is the chemical behavior of an atom is determined by?

By using the activity series (sometimes called reactivity series) which orders metals by their reactivity with other metals, one can determine the reactivity of a metal


What is Hydrogen's reactivity?

we cant say the reactivity of H but reactivity of H can be ordered or compared with other elements. see the reactivity series


Which factor determines the reactivity of a compound?

total number of electrons


What is synthetic elements reactivity?

not reactive


Which of the following elements shows little reactivity Fluorine Sulfur Potassium or Argon?

From the elements given, argon shows the least reactivity.


How do you compare the reactivity of a set of elements?

Electronegativity is a measure of the reactivity; see the link below.


What is it called when elements do not combine with other elements?

inertness, non-reactivity


What are semimetals reactivity?

Depends on the elements with which they are reacting with.


Why do elements in the same group or column of the periodic table have similar properties?

Elements in the same column on the periodic table have similar chemical reactivity because they have the same outer electron configuration and it is the electron structure that determines an elements properties.


What is the reactivity of xenon?

It is one of the least reactive elements.