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When a valance shell has 7 electrons will it gain or lose an electron?
Wiki User
∙ 13y ago
It will gain an electron so that it can complete a full outer shell of 8 electrons.
Wiki User
∙ 13y ago
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Why do you think non metals tend to be good at sharing electrons?
All atoms are more stable when their outer most electron shell (valance shell also refered to as a valance orbital but it is slightly different) is full of electrons. Non metals generally have almost full valance shells and it takes less energy to gain a few electrons to reach the stable full outer shell than to lose many electrons to form a stable full outer shell. Take F as an example - it has 7 electrosn in its outermost shell and this shell can fit 8. It will accept 1 electron more easily than losing 7.
Why don't the noble gases react with anything else?
Noble gases have a full outer electron shell, making them stable and less likely to form chemical bonds with other elements. Their electron configuration gives them a low tendency to gain or lose electrons, making them unreactive. This inertness is due to the high ionization energy required to remove or gain additional electrons from noble gases.
How many valance electrons are in Be?
It is a Group 2 element, therefore it has two outer-shell electrons. To gain a full outer-shell, it loses two electrons to form a cation (cations are positive ions)
An electron configuration that is not chemically reactive?
Where there are 8 electrons in the outer shell so a full shell. Elements are reactive when they need to lose or gain an electron. The noble gases are unreactive as they have a full outer shell.
How many electrons must a halogen gain to reach stability?
Halogens are in the seventh group on the periodic table, and thus have seven electrons in their outer shell. In order to attain a noble gas configuration, it must gain an electron to form an octet, which is when eight electrons are in the outer shell.
If an atom has 3 electrons how many electrons are in the outer shell Will it be more likely to acquire or lose an electron?
If an atom has three electrons, it will have one valence electron (valance = outer shell). It will be more likely to lose an electron than gain one, since it has only one to lose, but seven to gain.
Why does fluorine atom atom tend to gain only one electron?
It has 7 electrons in its valance shell so it needs only 1 electron to form a octet; the Nobel gas configuration.
What is the number that tells you how many electrons an atom needs to gain or lose to complete a shell is called?
It is Valence, I am sure because I just had a test about this.
Why do you think non metals tend to be good at sharing electrons?
All atoms are more stable when their outer most electron shell (valance shell also refered to as a valance orbital but it is slightly different) is full of electrons. Non metals generally have almost full valance shells and it takes less energy to gain a few electrons to reach the stable full outer shell than to lose many electrons to form a stable full outer shell. Take F as an example - it has 7 electrosn in its outermost shell and this shell can fit 8. It will accept 1 electron more easily than losing 7.
How many more valence electrons does sodium need to have a full?
Sodium would need to gain 7 electrons to fill its valance shell. Instead of doing that, however, sodium will lose the one valence electron it does have, leaving behind the shell below it, which is already full.
Why doesnt a neon atom tend to gain electrons?
Because , It's Outer Shell Is Totally Full With 8 Electrons .
How can you get an ion of bromine?
Bromine has 7 electrons in its outer shell and needs to gain one electron to have a full outer shell and become an ion. It will gain this electron from an atom that has one electron in its outer shell such as Lithium or Sodium.
Will chlorine gain an electron?
Chlorine atoms have 7 outermost electrons and need to gain an electron to achieve the stability of a full valence shell.
A bond formed by the gain or loss of electrons from the outer electron shell?
Ionic bond
Why doesn't the sodium atom gain 7 electrons so that its third shell becomes the filled outermost shell?
Atoms with 1 electron on outer shell loses the electron more easily.Atoms with 7 electrons on outer shell gain an electron more easily.Metal and non-metals bond ionically, so one loses electrons; one gains electrons. So everything is going towards that outcome.
Why don't the noble gases react with anything else?
Noble gases have a full outer electron shell, making them stable and less likely to form chemical bonds with other elements. Their electron configuration gives them a low tendency to gain or lose electrons, making them unreactive. This inertness is due to the high ionization energy required to remove or gain additional electrons from noble gases.
How many electrons do halogens have to lose or gain to achieve a stable noble gas electron configuration?
They have to gain 1 electron. Halogens have 7 electrons in their valence shell and noble gasses have 8.
