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This element doesn't exist.
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Why did Mendeleev put bromine (Br) and chlorine (Cl) in the same group on the periodic table?
Bromine and Chlorine both have equal chemical properties. They both have 7 electrons in the outermost energy level. They both gain 1 electron to get the noble gas configuration.Cl and Br have same chemical properties. They have 7 valence electrons. They both are non-metals.
Why is chlorine more reactive than argon?
Chlorine is very reactive because it is a halogen (Group VII of the Periodic Table) and it does not have a filled outermost energy level. Argon is unreactive because it is a noble gas (Group VIII of the Periodic Table). Its outermost energy level is full.
How many electrons does lithium lose or gain to achieve a stable octet configuration?
Lithium is in group 1 of the Periodic How_many_electrons_must_the_lithium_atom_give_up_to_become_stable, so it must lose one electron for it to attain a full outermost energy level and become stable.The charge will then be positive (+).
How many valance electrons does helium have?
Helium has two valence electrons. It is the only noble gas not to have eight valence electrons. Helium has the electronic configuration 1s2.The Noble gases have eight valence electrons in their outer shell.
What element has 8 electrons in 1 atom?
These are the Noble gases which are generally inert. (Except for Helium, which has two electrons, but which is still considered a Noble Gas.)
What element is a noble gas in the first energy level?
There are no noble gases in the first energy level. Noble gases are found in the last (highest) energy level of an atom. The first energy level can only hold a maximum of 2 electrons, while the noble gases have completely filled outermost energy levels.
Do noble gasses have the maximum number of electrons in their outer energy level?
yes.they have the maximum number of electrons in their outer energy level?
How many electrons in the outermost energy level of noble gases?
8
How many electrons are in the outermost energy level of noble gases?
Helium has 2 valence electrons. All other noble gases have 8 valence electrons.
Do noble gases have the maximum number of electrons in their outer energy level?
Yes, the outermost energy level of the atoms of the noble gases are filled, meaning that they have the maximum number of electrons. This is why noble gases are stable and unreactive. The atoms of reactive elements share or transfer electrons in order to fill their outermost energy levels, making them stable like the noble gases.
A gas that has a stable number of electrons in the outer energy level?
Noble gas
What contains 8 electrons in the outermost energy level?
Noble gases (except for helium which has 2 valence electrons).
How many electrons does a chemically stable atom have in its outer energy level?
8 electrons
What are valence electrons and how do they relate to the noble gases?
Valence electrons are electrons in the outermost shell (or outermost energy level or outermost orbital) in an atom. Noble gases have 8 valence electrons. But helium (a noble gas) has only 2 valence electrons.
Which group has a complete set of valence electrons in their outer energy level?
noble gases
Which noble gas does not have eight electrons in it's highest occupied energy level?
Helium
Which group has a complete set of valence electrons in their outermost energy level?
The noble gasses.
