The maximum number of valence electrons is SEVEN (7 is total number of electrons in the uncompleted highest level s- and p-orbitals: s2 and p5 = (sp)7)
You'll find this mainly in group 17: the halogens, though other elements may also have 7 valences: eg. Manganese in permanganate MnO4-
In actuality Mn has SEVEN valence electrons, not really 2 as might be predicted. The reason for this is that Mn is [Ar]3d5 4s2, and as a transition element, not only are the 4s electrons available for bonding, but so are those in the d orbital. So, the 5 electrons in 3d and the 2 electrons in 4s are all considered as valence electrons.
The "valence" electrons are responsible for chemical reactions and bonding. Valence electrons are found in the outer most orbital of the atom, farthest away from the nucleus.
This is usually part of the bonding process called ionic bonding.
covalent bonding
The outer shell electron(s) of any element that engage in chemical interactions; such as ionic or covalent bonding.
Valence electrons describe the number of available electrons for bonding. The group number describes outermost electron. The elements in same group has same valence electrons.The number of electrons available for bonding are the valence electrons. In an element, the group number is equal to the number of valence electrons. So the number of electrons available for bonding can be identified by the group number.
The element carbon
Chemical bonding is related mainly to electrons.
Group II elements, Be, Ca, Sr, Ba and Ra
Carbon
The valance electrons of an element are involved in chemical bonding.
number of electrons in the bonding shell vary according to the element. for example group 1 in the periodic table contains elements with ony one electron in their bonding shell, similarly group 2 has elements with two electrons in its bonding shell and so on. the group number in the periodic table denotes the number of electrons in the bonding shell of each element present in that particular group
It would belong to group XVI, the group with oxygen.
Valence Electrons are the outermost electrons in an element and they are used for bonding with other elements.
Electrons are the most important element in atom bonding. Each element has an atomic number based on the number of electrons, and it is the was these different numbers of electrons link up to each other that determines how closely they will bond.
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.
In actuality Mn has SEVEN valence electrons, not really 2 as might be predicted. The reason for this is that Mn is [Ar]3d5 4s2, and as a transition element, not only are the 4s electrons available for bonding, but so are those in the d orbital. So, the 5 electrons in 3d and the 2 electrons in 4s are all considered as valence electrons.