0
Reactions in chemistry are all about the number of electrons in the outer shell of an atom. Generally the more space it has in this shell the more reactive it will be.
Group 1 have only 1 electron in the outer shell, group 8 have 8 (8 is the maximum possible so these elements are not reactive).
Wiki User
∙ 15y ago
Wiki User
∙ 10y agoI think you mean groups 17 and 18 not 7 and 8. Group 17 is reactive because elements of 17 have 7 valence electrons (number of electrons in the outer shell,) and elements of group 18 have 8 valence electrons. 8 is the stable number of electrons so they do not react.
.
Of course the exception is hydrogen and helium. Helium (group 18 or 2 depending on the table) is a noble gas and has 2 valence electrons. This is because the inner most orbital of electrons is stable with 2 electrons. Hydrogen only needs 1 more electron to be stable for the same reason.
Wiki User
∙ 11y agobecause they need one more electron to attain completely filled shell
Wiki User
∙ 11y agoElements of the group 7 (Mn, Tc, Re) are not so reactive; for comparison elements from the groups 1,2 and 3 are more reactive.
Add your answer:
Earn +20 pts
Why are group 1 and 7 elements are found as compounds?
Because they are very reactive.
Why do you not find pure elements in group 1 and 7?
they are very reactive and would probably react with other elements before we find them.
What group does group one from the periodic table likes to reacts with?
Group one elements are the most reactive with group 7 elements as it is the easiest way for the elements to complete their outer shell as the group one element gives its extra electron to the group 7 element and then the group 7 element has a full shell too.
In terms of electrons in the periodic table why are group 1 metals very reactive and group 7 non-metals very reactive too?
Atomic elements typically want to have full electron shells ("valence shells"), instead of shells with uneven numbers. Group 1 metals have only 1 electron in their valence shell, so they quickly react to lose this electron and have an empty shell (but a full shell underneath it). Group 7 elements have 7 valence electrons and react quickly to steal another atom's electron and gain a full shell of 8 electrons. This willingness to lose or steal electrons makes the elements very reactive, but in different ways. Group 1 elements will become positively charged ions, and Group 7 will become negatively charged. (Na+ versus Cl-) Group 6 elements (such as oxygen) are also somewhat reactive and will steal 2 electrons to become even more negatively charged (O 2-)
Why are group 7 non-metals dangerous to humans?
they are all very reactive and poisonous
Why are group 1 and 7 elements are found as compounds?
Because they are very reactive.
Why are group1 and 7 found as compounds?
Group 1 elements have very low electronegativies and group 7 elements have very high electronegativities, so that both are reactive with almost every other element, the group 1 elements by donating electrons and the group 7 elements by accepting electrons.
Why do you not find pure elements in group 1 and 7?
they are very reactive and would probably react with other elements before we find them.
In what group are elements extremely reactive nonmetal's?
Halogens, group 17 (7)
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 elements are more reactive than most?
Caesium and francium, in group one or in group 7 iodine or astatine.
What group does group one from the periodic table likes to reacts with?
Group one elements are the most reactive with group 7 elements as it is the easiest way for the elements to complete their outer shell as the group one element gives its extra electron to the group 7 element and then the group 7 element has a full shell too.
Are the group 17 elements highly reactive or nonreactive?
Highly reactive because they only have 7 electrons. They need 8 to be a stable element.
What are the names of the four elements of VII A group?
Group 7 elements are halogens. They have seven valance electrons& are highly reactive. They are: -Fluorine -Chlorine -Bromine -Iodine
What group of elements on the periodic table is most reactive?
For the most part, the Halogen group is the most reactive group on the periodic table. However, the Alkali metals are just as equal but not quite.
Which of the following groups contains the most reactive elements?
Group 7: Fluorine is the most reactive element.
In terms of electrons in the periodic table why are group 1 metals very reactive and group 7 non-metals very reactive too?
Atomic elements typically want to have full electron shells ("valence shells"), instead of shells with uneven numbers. Group 1 metals have only 1 electron in their valence shell, so they quickly react to lose this electron and have an empty shell (but a full shell underneath it). Group 7 elements have 7 valence electrons and react quickly to steal another atom's electron and gain a full shell of 8 electrons. This willingness to lose or steal electrons makes the elements very reactive, but in different ways. Group 1 elements will become positively charged ions, and Group 7 will become negatively charged. (Na+ versus Cl-) Group 6 elements (such as oxygen) are also somewhat reactive and will steal 2 electrons to become even more negatively charged (O 2-)
