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Which elem...

Question

Which element is the most reactive?

5 months ago

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Hershel Skiles


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Fayyad Uddin Best Answer!

Fluorine is the most reactive element due to its high electronegativity

Ruqaiya Jahanara Best Answer!

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The periodic table has two groups; metal and non-metal elements and so to answer your question I will focus on each group and identify the most reactive element out of each group. The most reactive element is Fluorine in the non-metals group and Caesium in the metals group. Due to both these elements being different 'types' of elements it is difficult to make a comparison of reactiveness and state which one is more reactive. Thus, each one must be seen as being the most reactive in their own groups. I hope that helps!

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SIVALAXMI BASHA Best Answer!

Aluminium is the most reactive element it's atomic number is 13. Al is its symbol. Finally, the most reactive elementary group is alkali metals situated far apart from intermediate metals and noble gases.

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Zak Best Answer!

Fluorine is identified as the most reactive non-metal and the most electronegative element in the periodic table, making it the strongest oxidizing agent. Caesium is the most reactive metal in the periodic table, so much so that working with this metal often ends in explosions! If you wish to know more about the periodic table or want to learn some key things to remember, please let me know.


Manish Vaghela Best Answer!

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Most reactive metal > Bottom of Group 1(alkali metals) in the the Periodic Table = Francium (Fr).

Most Reactive no metal > Top of Group 7 (the halogens) in the periodic table = Fluorine (F).

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Natasha Best Answer!

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Potassium from group 1

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Jay Makwana Best Answer!

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Most reactive element in the periodic table is Francium (atomic number 87 - look down first column of the periodic table with symbols Fr).


https://www.rsc.org/periodic-table/element/87/francium


However, Francium is radioactive and not readily available. To get an idea of a highly reactivity group 1 metal available in some laboratories, have a look at a video of Caesium (atomic number 55, symbols Cs) from the Royal Society of Chemistry demonstrated at the University of Nottingham. Start at 5 minutes.


https://www.rsc.org/periodic-table/video/55/Caesium?videoid=5aD6HwUE2c0


If this link does not work, try a version directly on You Tube with the following link


https://www.youtube.com/watch?v=5aD6HwUE2c0&t=326s


Reaction is immediate and generates so much energy that it ignites the hydrogen. Explosive reaction.


Word equation: Caesium + water produces Caesium hydroxide + hydrogen.


Caesium hydroxide produced is also so powerful that it would react with the glass container.


Further information and tips:


Note that the Royal Society of Chemistry has a free interactive periodic table on the following link. This interactive periodic table is great resource for history, properties, videos, podcasts, chemistry etc.


https://www.rsc.org/periodic-table


Try it with a look at the video for Fluorine, atomic number 9. It is the most reactive non-metal.


https://www.youtube.com/watch?v=vtWp45Eewtw&t=158s




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Lavan Ganeshkumar Best Answer!

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Fluorine (F) is identified to be the most reactive element in the periodic table. It's need to gain an electron to form a a full outer shell (2,8) gives rise to it being the most reactive.

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Mia Best Answer!

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The most reactive metal is Francium (Fr) and the most reactive non-metal is fluorine (F).


Fluorine is the most reactive element in the periodic table, as it is very electronegative and it is reactive as it needs to gain an electron to complete the outer shell.

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Felix Effah Best Answer!

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The most reactive element is fluorine. It can react with almost everything instantly

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OLUWATOBI ADEGBOYE Best Answer!

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This is hard to answer because it depends on whether we are discussing a non-metal or metal. There are different trends in reactivity for metals and non-metals and often these trends are opposite. For example, an element lower down in group 1, like caesium, will be more reactive than an element higher up in group one, like potassium. This is because group 1 elements are metals, therefore, are trying to lose an outer electron to react. The further out the outer electron is due to more levels of shielding observed as we go down group 1, which causes an outer electron to be removed from caesium easier than an outer electron is removed from potassium. This is the opposite for group 7 (halogens) which are non-metals. They want to gain an electron to complete their outer shell as they normally have 7 out of 8 electrons on their outer shell. Therefore to react, the ideal scenario is to have minimal shielding so other electrons are closer and more easily attracted to the nucleus. For this reason, elements higher in group 7, such as chlorine, are more reactive than elements lower in group 7, such as iodine.

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Eglis Imeri Best Answer!

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The periodic table has two groups; metal and non-metal elements and so to answer your question I will focus on each group and identify the most reactive element out of each group. The most reactive element is Fluorine in the non-metals group and Caesium in the metals group. Due to both these elements being different 'types' of elements it is difficult to make a comparison of reactiveness and state which one is more reactive. Thus, each one must be seen as being the most reactive in their own group. I hope that helps!

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Gareth Best Answer!

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Top of group 7 (The halogens) are very reactive (e.g Fluorine). If you are looking at metals, the Group 1 Alkali metals are very reactive. As you move down the group them react more violently with water for example. (e.g. Rubidium, Caesium, Francium).

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Rabiah Bhutta Best Answer!

The most reactive element is Caesium. This is because it has many electron shells and only one electron in its outer shell, meaning the electrostatic forces of attraction between positively charged protons and the negatively charged electron is weak, so the electron is given up the easiest, meaning it is the most reactive.

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Mariam Chaudry Best Answer!

Fluorine is the most reactive element in the periodic tbale

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Michelle Best Answer!

Flourine- fluorine is the most reactive non metal

Shazmeen Best Answer!

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The group 1 elements are the most reactive going in down the column from least to most

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Pooja Pithadia Best Answer!

potassium is the most reactive element

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Laura Alfs Best Answer!

Caesium (Cs) - a group 1 alkalki metal. All alkali metals are reactive, increasing as you go down the periodic table.

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Jas Sull Best Answer!

Francium is most reactive element in periodic table.

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Safaa Kadiri Best Answer!

fluorine is the most reactive.

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