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How many electrons do the elements of the most stable group have in their outer shells?
Wiki User
∙ 12y ago
Most of the noble gases have 8 electrons in their outer shell, but helium has only 2, and is the most stable of all elements.
Wiki User
∙ 12y ago
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How many electrons are required in the outer energy level for most elements to be stable?
The noble gases is the most stable group of elements. They have their outer electron energy levels full, but the number of electrons vary according to which noble gas it is. They are group 18 on the periodic table.
What is the relationship between group and period?
Groups are the number of outer shell electrons in the elements and periods are the number of outer shells in the elements. eg. group 4, period 3 is Silicon which means that it has 3 shells where the electrons are stored and in the last shell it has 4 electrons
What do elements in each group or family have in common?
elements in a group have the same number of valence electrons. The number of shells present increases as we move down a group.
What do all elements in group 7 have in common?
All elements in group 7 have the same no. of electrons in their outermost shells... and this no. correspondes to the group no.
Elements in Group 1 become more stable by what an electron?
Elements in group two become more stable as they all have complete electron shell.They do not have valence electrons and hence they are less reactive.Some of the elements of group 2 are Barium,Magnesium and Calcium
What does the group of the periodic have to do with reactivity?
The table was organized so that elements of similar properties are in the same group. What (partly) determines reactivity is the number of electrons an atom has in it's ground state. . Within the atom electrons are organized in shells. Atoms are stable when they have 8 electrons in their outer shell (for hydrogen and helium it is 2 electrons.) . Elements of: Group 18 have 8 electrons in their outer shells Group 17 have 7 electrons in their outer shells Group 16 have 6 electrons in their outer shells Group 15 have 5 electrons in their outer shells Group 14 have 4 electrons in their outer shells Group 13 have 3 electrons in their outer shells Groups 3-12 have varied number of electrons in their outer shells Group 2 have 2 electrons in their outer shells Group 1 have 1 electron in their outer shells
What is a group of elements that rarely combine with other elements because they already have eight electrons in their outer shells?
A group of elements that rarely combine with other elements because they already have eight electrons in the outer shells is a Noble Gas
Why does the size of the elements increase down a group?
The atomic numbers of the elements down a group increase. this means, more electrons. More electrons mean more shells. More shells mean larger radius. Larger radius is nothing but larger size. Thus, the number of electrons or shells is the reason why the size of the atom of elements increase down the group.
What group of elements has a staple number of electrons in their outer energy level?
Group 18 elements have a stable octet.
How many electrons are required in the outer energy level for most elements to be stable?
The noble gases is the most stable group of elements. They have their outer electron energy levels full, but the number of electrons vary according to which noble gas it is. They are group 18 on the periodic table.
Why is it easier for group 14 elements in the periodic table to become stable instead of transferring electrons?
Group-14 elements do not transfer electrons. They share electrons to form covalent bonds.
What is the relationship between group and period?
Groups are the number of outer shell electrons in the elements and periods are the number of outer shells in the elements. eg. group 4, period 3 is Silicon which means that it has 3 shells where the electrons are stored and in the last shell it has 4 electrons
What group of elements has a stable amount of electrons in their outer level?
noble gases
What is different about the group 18 elements?
Group 19 elements have 8 valence electrons (obey octet rule) and are hence stable.
What do elements in each group or family have in common?
elements in a group have the same number of valence electrons. The number of shells present increases as we move down a group.
What do all elements in group 7 have in common?
All elements in group 7 have the same no. of electrons in their outermost shells... and this no. correspondes to the group no.
Elements in Group 1 become more stable by what an electron?
Elements in group two become more stable as they all have complete electron shell.They do not have valence electrons and hence they are less reactive.Some of the elements of group 2 are Barium,Magnesium and Calcium
