8
it needs six more electrons to have a full outer valence shell.
3 valence electronsThere are three valance electrons. These are the electrons in the outer shell if it is not full.
Phosphorus, with 5 valence electrons, needs to gain 3 electrons to have a full set of 8 valence electrons. This would allow it to achieve a stable octet configuration, resembling the noble gas configuration of argon.
1
A bromine anion has 8 valence electrons. This is because bromine, with 7 valence electrons, gains one extra electron when it forms an anion to achieve a full octet and become stable.
3
it is in the oxygen family and has 6 valence electrons it requires 2 electrons
Oxygen needs 2 more valence electrons to have a full outer shell. Oxygen has 6 valence electrons, and a full outer shell for oxygen is achieved at 8 valence electrons.
Krypton has 8 valence electrons.
Nitrogen has five valence electrons as a neutral atom, but it is shooting for eight. So it needs to gain three more electrons.
it needs six more electrons to have a full outer valence shell.
7
3 valence electronsThere are three valance electrons. These are the electrons in the outer shell if it is not full.
Phosphorus, with 5 valence electrons, needs to gain 3 electrons to have a full set of 8 valence electrons. This would allow it to achieve a stable octet configuration, resembling the noble gas configuration of argon.
It indicates how many electrons are required to complete a full valence shell.
There are three valance electrons. These are the electrons in the outer shell if it is not full.
You would need 1 more electron to make a Chlorine atom stable with 7 valence electrons. This additional electron would allow Chlorine to achieve a full valence shell of 8 electrons, following the octet rule.