a. A sulfur atom has 6 valence electrons and gains
2 electrons
to attain a noble-gas configuration.
How many electrons must be gained by an atom to achieve a stable electron configuration?
Elements in group 1 need to lose one electron to achieve a stable electron configuration. Elements in groups 14 and 17 need to gain
four and one electrons
, respectively, to achieve a stable configuration.
How many electrons does s need to be stable?
The valence shell (the 3s and 3p sublevels) contains six electrons, but it needs
eight
to become stable. Think of the octet rule
How many electrons can s gain?
Each principal energy level has one sublevel containing one orbital, an s orbital
How many electrons must be gained by the element sulfur?
a. A sulfur atom has 6 valence electrons and gains
2 electrons
to attain a noble-gas configuration.
Why is 3rd shell 8 or 18?
In this sense the third shell
can hold 8 electrons
. 4s2 not the third shell, but the next 10 electrons go into the 3d orbitals that are part of the third shell but shown on the fourth shell level. … So the third shell can be considered to hold 8 or 18 electrons but in total the third shell can hold 18 electrons.
Why is the electron stable?
Much of physics goes on the assumption that it is. Electron stability is
a necessary consequence of the law of conservation of charge since all particles lighter than the electron are electrically neutral and therefore it cannot decay into them and conserve charge at the same time
.
How many electrons can lose?
All Group 1 atoms can lose
one electron
to form positively charged ions. For example, potassium atoms do this to form ions with the same electron configuration as the noble gas argon. Group 2 atoms lose two electrons to form positively charged ions. For example, magnesium atoms form Mg
2 +
ions.
What elements are likely to gain electrons?
Elements that are
nonmetals
tend to gain electrons and become negatively charged ions called anions.
Does P lose or gain electrons?
Phosphorus tends to lose 5 electrons and
gain 3 electrons
to complete it’s octet. Phosphorous shares all its five valence electrons while making a covalent bond like in PCl5 etc. So, phosphorous has a valecny of 3 only in ionic compounds and it is a non metal like nitrogen etc.
How many electrons must be gained or lost to achieve a noble gas?
Most nonmetals gain
1,2,or 3 electrons
to achieve noble gas electron configuration.
How many electrons must be lost by Li?
The enclosed electron configuration is the electron configuration of helium (He), the nearest noble gas to Lithium (Li). Hence, Lithium is most likely to lose
1 electron
and form a cation to achieve the electron configuration of Helium, the nearest noble gas.
What is the 2 8 8 rule in chemistry?
There is a 2-8-8 rule for these elements.
The first shell is filled with 2 electrons, the second is filled with 8 electrons, and the third is filled with 8
. You can see that sodium (Na) and magnesium (Mg) have a couple of extra electrons. They, like all atoms, want to be happy.
Is it 8 or 18 electrons in third shell?
So the
third shell
can be considered to hold 8 or 18 electrons but in total the third shell can hold 18 electrons.
Why does the third shell have 8 electrons?
| Energy shell Maximum number of electrons | First 2 | Second 8 | Third 8 |
|---|
