0
How many electrons are in the outer energy level of group 7 a elements?
Wiki User
∙ 11y ago
To start off, the electrons on the outermost energy level of an atom are called valence electrons. You can tell how many valence electrons an energy level has by finding out its group number. If an element is in group one, than it has one valence electron.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
How many valence electrons do the boron group have?
Boron is located in group 3A. It is group 13 in modern notation. This set of elements have three valence electrons.Boron is in the 13th group in the periodic table. Elements in this group has 3 electrons in the outermost energy level. That means they have 3 valence electrons.
What group of elements with seven electrons in the outer level?
halogens (group 17 elements)
What is a colunm in the periodic table?
In the Periodic Table of the Elements, a column (group) contains all elements that exist with the group number of electrons in the outer energy level of an atom of that element.
When elements gain three electrons to fill its valence energy level?
When these elements have five electrons on the outermost shell of electrons.
How many electrons are in oxygen's outer level?
The word "valance" is used to describe electrons in the outer-most energy level of an atom. Oxygen has six valance electrons.
What group of elements has a staple number of electrons in their outer energy level?
Group 18 elements have a stable octet.
Do group 7 electrons have 7 electrons in the outer shell?
Group seven elements have 7 electrons in their outermost energy level.
What do all group 14 elements have in common periodic table?
All the Group 14 elements has 4 electrons in its outer energy level.
What is the groups number for elements that have a stable number of electrons in their outer energy level?
Group 8
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.
The number of electrons in the outer energy level of Group 17 elements is?
there are 7 electrons in the outer energy level of group 17 elements
How many electrons are in the highest occupied energy level of oxygen?
Oxygen atoms have 6 electrons in the highest occupied energy level. They are two 2s electrons and four 2p electrons. All elements in Group 16 have 6 valence electrons. For Groups 13-18, subtract 10 from the group number and that gives you the number of valence electrons (the electrons in the highest energy s and p orbitals). The Group 1 elements have one valence electron and the Group 2 elements have two valence electrons. The transition metals can vary in the number of valence electrons. You can't necessarily go by group number for them.
How many electrons do beryllium and magnesium have in there outer energy levels?
Beryllium and magnesium have two electrons in their outermost energy level, as do all Group 2 elements.
How many valence electrons do the boron group have?
Boron is located in group 3A. It is group 13 in modern notation. This set of elements have three valence electrons.Boron is in the 13th group in the periodic table. Elements in this group has 3 electrons in the outermost energy level. That means they have 3 valence electrons.
Why do elements in group 18 rarely react with other elements?
Elements in Group 18 already have an octet of electrons, which is a full outer shell of 8 electrons. An octet of electrons makes the element stable, so it does not need to react with any other elements to gain or lose electrons.
Why is it significant that valence electrons are located in the outermost energy level of an atom?
The valence electrons are the electrons that undergo chemical bonding in the main group or representative elements.
What group of elements with seven electrons in the outer level?
halogens (group 17 elements)
