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Why do the elements in group 7 become more less reactive as you go down the list?
Wiki User
∙ 11y ago
Halogens have seven electrons on their outer shell. To fill the shell they only need one more. Towards the bottom of the table the atoms are physically bigger, and hence, have more trouble attracting electrons, since their nucleus' are further from the electron they want, and there are already electrons between them
Wiki User
∙ 12y ago
Wiki User
∙ 12y agocoz its going down the Periodic Table and the higher you go the more reactive they get
Improvement:
Group 7 elements want to attract an electron to get a full outer shell. The further down the group you go, the bigger the atom gets and the greater the shielding effect. That's why it gets harder for the halogen atom to attract an electron. According to Professor Josh Lockwood this is a........ leah rachael sweeney
Wiki User
∙ 16y agoGroup 7 aren't metals, they are the halogen gases: Fluorine, Chloring, Bromine, Iodine and Astatine they still react with things
Wiki User
∙ 11y agoBecause the electrons get further away from the nucleus meaning it's much harder to gain another electron which they need to complete the reaction.
Wiki User
∙ 11y agoElectronegativities in the group 7 are:
- manganese: 1,55
- technetium and rhenium: 1,90
It is a decrease of reactivity from Mn to Tc&Re.
Wiki User
∙ 11y agoGroup7 element reactivity decrease down the group
Wiki User
∙ 13y agoIs due to the increase in the force of attraction between the nucleus and the outer most electrons.
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What is the least reactive metal in the alkali metal group?
Lithium - As it is first in Group 1. Group 1 elemts become more reactive as you go down the group.
Is it true that the most chemically reactive metals are in group 1 of the periodic table of elements?
Yes. The most chemically reactive metals are in group 1. To add to that, as you go down the periodic table, in group 1, they become more reactive. Potassium is more reactive than Sodium, and Cesium is more reactive than Rubidium. The same general trend occurs throughout the periodic table. The lower down you go in any given column, the elements are more reactive than the last, and the further left you go in each row, the elements are more reactive than the last. (There are exceptions however.) It has to do with electronegativity.
How does the reactivity of the elements in group 2 change on descending the group?
As you go down the Group 2 (alkaline earth elements) elements they become more and more reactive. i.e. H2O+Ca=Ca(OH)2+H2 there is more hydrogen (g) created and at a faster pace than H2O+Mg=Mg(OH)2+H2.
How does the reactivity of group 1 and 7 elements change as they move down their groups and why?
It decreases. This is because each period (row) you go down, the element has more shells. The more shells the less effective the positive nucleus is at attracting other negative atoms to bond with and gain an electron. It is made harder to attract because there is an increasingly bigger field of negative electrons in the way.
Do elements become more or less metalic as you go down a group?
they become more metallic
What kind of group one are the most reactive?
The elements in group 1 become more reactive as you go down the group.
Why group 7 elements get more reactive as you go down the group from fluorine to iodine?
There can not be any reason, because the premise is not true: Group 7 elements become less rather than more reactive from fluorine to iodine.
What are the most reactive elements in the group of akali metals?
Alkali metals are the elements in the 1st group. In the 1st group,the reactivity of the elements increase down the group. Cs is the most reactive alkali metal.
The least reactive metal in group 1 of the periodic table?
Francium is considered the most reactive of the group 1 elements. This is because it is the largest of all elements in group 1, therefore takes the least amount of energy to lose an electron (Group 1 elements react by losing electrons.)
How many elements on the periodic table of elements?
In the Periodic table of Elements There are 118 Elements 96 are metals The rest are non-metals Group 7= Halogens Group 8/0= Noble gases Going down group 1 and 2, elements become more reactive
Do the halogens become more reactive or less reactive as they go lower down the group?
The most reactive halogens - fluorone and chlorine - are in the upper part of the group.
What group of elements consists of non reactive non metals?
Non-reactive elements or compounds are called inert. This is a bit misleading, however - anything can be made to react given the right circumstances. The noble gases are about as close as you can get to truly inert, but even they will react under extreme conditions. >>M.T.<<
Which element in group 6 is the most reactive?
Elements are more reactive as you go down the periodic table and to the left.
What is the least reactive metal in the alkali metal group?
Lithium - As it is first in Group 1. Group 1 elemts become more reactive as you go down the group.
Are group 2 elements highly reactive?
Reactivity increases as you go down the group. Radiom is far more reactive than Beryllium.
What is the most reactive group of elements in the periodic table?
Alkali Metals (group 1) because they only need to lose one electron in order to have a stable valence level of 8. As you go down the alkali metals group, the elements become more reactive. So Francium is the most reactive alkali metal. Also, Halogens, because they already have 7 electrons and only need to gain one in order to have a stable valence level of 8. As you go up the halogens group, the elements become more reactive. So Fluorine is the most reactive halogen. This is just a brief summary, if you want to know the reasons why this is I suggest you search about ionization energy, electron affinity, and electronegativity because these are all what make an element "reactive."
Is it true that the most chemically reactive metals are in group 1 of the periodic table of elements?
Yes. The most chemically reactive metals are in group 1. To add to that, as you go down the periodic table, in group 1, they become more reactive. Potassium is more reactive than Sodium, and Cesium is more reactive than Rubidium. The same general trend occurs throughout the periodic table. The lower down you go in any given column, the elements are more reactive than the last, and the further left you go in each row, the elements are more reactive than the last. (There are exceptions however.) It has to do with electronegativity.
