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You are watching: How to tell how reactive an element is


The reactivities of aspects can it is in predicted by periodic trends (patterns in ~ the routine Table.)

Let"s begin with regular trends. An element"s reactivity is its tendency to lose or get electrons.

The Alkali steels (Group 1) have the highest propensity to lose electrons, making them the most reactive of the...

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The reactivities of aspects can it is in predicted by routine trends (patterns in ~ the periodic Table.)

Let"s begin with routine trends. One element"s reactivity is its tendency to lose or obtain electrons.

The Alkali metals (Group 1) have the highest propensity to lose electrons, making castle the most reactive the the metals. This is due to the fact that they have one external electron and losing it offers them the security of a outer electron shell as the next level down becomes the highest possible occupied level. The Alkali metals become an ext reactive relocating down in the group, v francium gift the many reactive. This trend occurs due to the fact that each element, together you move down, has an ext inner electrons the shield the one valence electron indigenous the nuclear charge making it much less attracted.

The Alkaline planet Metals (Group 2) space the next many reactive the the metals. They accomplish stability by losing two electrons. That takes much more energy to eliminate a second electron, i m sorry is why they"re much less reactive than the group 1 metals.  The trend for metals is the they become much more reactive walking down and less reactive going throughout in the routine table.

The Halogens (Group 17 or VIIA) are the most reactive non-metals since they have actually the highest tendency to acquire an electron. This is an expansion of the regular trend the the energy required to eliminate an electron boosts going throughout a heat of the periodic table. At a point it becomes more energetically favorable for an atom to gain electrons 보다 to shed electrons. The Halogens, having 7 valence electrons, achieve a full outer level by gaining one electron. The facets of the Oxygen family attain a complete level by getting two electrons. The tendency for non-metals (Groups 14-18 or IVA - VIIIA) is that they become much more reactive relocating up in ~ a group and moving come the right throughout a row.

The noble gases, group 18 top top the much right, space the least reactive that all aspects because they have a complete outer level the electrons.

There is published data to help you recognize relative reactivity that the shift metals, i beg your pardon don"t follow trends as closely. The activity series of metals is a ranking of stimulate of reactivity.

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It"s also feasible to produce one"s very own activity collection by reacting several elements with the same compound, for example reacting a collection of metals with the exact same acid and ranking lock by monitoring of rates of reaction.