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What is the number of valence electrons an element wants to be stable?
Wiki User
∙ 12y ago
Exactly enough to fill all the orbitals of their outermost (valence) shell:
- Hydrogen and Helium only have an s orbital in their outer shell, this shell is filled with 2 electrons
- All other elements have an s orbital and 3 p orbitals in their outer shell, each orbital can take 2 electrons so this shell is filled with 8 electrons
Wiki User
∙ 7y ago
Wiki User
∙ 12y agoAll elements in the Periodic Table want 8 valence electrons, except Hydrogen and Helium, they only want two valence electrons.
Wiki User
∙ 13y agoInnermost: 2
2nd level: 8
3rd: 6
4th: 18
5th: 18
6th: 32
7th: 32, but no known element has filled it.
Wiki User
∙ 12y agoThere must be 8 valence electrons for the element to be stable :)
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What rule is used to predict the number of electrons that must be lost or gained in order to achieve stability?
For doing so, firstly the electronic configuration of the element is written.Then it is seen how many electrons does the element has in its valence shell.The max. no. of electrons that can be present in the valence shell is 8. So, if the element has less than 4 electrons in the valence shell, then it looses them to form stable ion and if it has more than 4 electrons, it must gain 8-no. of valence electrons to form stable ion. If the element has 4 valence electrons, then it shares them with other atoms to form compounds.
Have two valence electrons and get to a stable electron configuration by using two electrons?
an element with 2 valence electrons can obtain a stable electron configuration by "kicking out" two electrons to have the same electron config as the noble gas in the previous period
What do you notice with the number of valence electrons?
The number of valence electrons determine the chemical properties of a particular element. For example, elements in group 1 tend to donate its valence electron away to produce its stable +1 ion. It also explains the formation of -1 ions from group 17 elements (halogens).
When an atom or an ion has 8 valence electrons it is more or less stable than when it ha fewer than eight valence electrons?
Valence electrons are the amount of electrons in the outermost electron shell. 8 valence electrons fill the outer shell making it completely stable.
What is The number of electrons that neon needs to gain to achieve stability?
Neon is already a stable element with a full outer electron shell, so it does not need to gain any electrons to achieve stability. Neon has 10 electrons in total, with a full valence shell of 8 electrons. Therefore, it is already in a stable configuration.
What element is stable with 2 valence electrons?
calcium
What element has a stable 2 valence electrons?
Calcium.
When is an element stable?
For an element to be stable, it must have a full outer shell (valence shell) of electrons. An element with a full outer shell of electrons will act like its nearest noble gas and be stable. Most elements require 8 valence electrons to be stable, however H needs 2.
What rule is used to predict the number of electrons that must be lost or gained in order to achieve stability?
For doing so, firstly the electronic configuration of the element is written.Then it is seen how many electrons does the element has in its valence shell.The max. no. of electrons that can be present in the valence shell is 8. So, if the element has less than 4 electrons in the valence shell, then it looses them to form stable ion and if it has more than 4 electrons, it must gain 8-no. of valence electrons to form stable ion. If the element has 4 valence electrons, then it shares them with other atoms to form compounds.
How many valence electrons will make an element stable?
The number depends on what will fill the outer shell. It can be 2 or 8.
What does electron configuration tell you about an element?
The electrons in an atom can tell you many things about the element such as: ~the atomic number ~number of valence electrons ~what column the element is in ex: Because if fluorine is element number 9 then there are 9 electrons.
How many valence electrons will make an element chemically stable?
The number depends on what will fill the outer shell. It can be 2 or 8.
What does the number of valence electrons tell you about a given element?
If its positive it tells u that it has that number of valence electrons. If negative it tells you that it requires that number of electrons to make the valence electrons filled up/stable. If you know which Ion it is, you know the number of valence electrons of the neutral Atom. It corresponds to the group in the periodic table, the element is in. For example: Mg. It's in group 2, so it has 2 valence electrons. The oxidation number now tells you how many more or less electrons the atom has. For example: Mg(II) has 2 positive charges, hence two electrons less. That means it has 0 valence electrons. Take complete number of valence electrons, subtract the oxidation number and you get the number of valence electrons in the ion.
How many electrons to most elements need to become stable?
Most elements need 8 electrons in their valence shells.
Have two valence electrons and get to a stable electron configuration by using two electrons?
an element with 2 valence electrons can obtain a stable electron configuration by "kicking out" two electrons to have the same electron config as the noble gas in the previous period
How many valence electron are needed for an atom to be stable?
It depends on the atom. List what element the atom is from.
How many valence electrons do stable atoms have?
A stable atom has 8 electrons in its outer most valence shell. A simple way to remember this is that all atoms want to be like the noble gases which all have 8 electrons (except helium but the reason is complicated and not necessary here)
