Halogens are usually very reactive because of the lacking electron in the valance orbital. Halogens usually form very strong bonds because of their high eletronegativity. These are usually the elements in which manufacturers measure success on how of the workers are alive at the end of the year.
Noble gases have completely filled orbitals / energy levels. They generally have 8 valence electrons (helium has only 2) and have stable electronic configuration.
There are no common things for halogens. But all of them are non metals. There are many uses by halogens.
Outer shell of halogen family have seven valence electrons. They gain electrons to form anions.
they are all salt-formers
It has seven electrons on the outer shell
The halogen family, F,Cl,Br,I,As all have outer shells with 7 electrons
They need 7 more to complete the octet.
The electron configuration of oxygen is [He]2s22p4.
Halogen family members, or elements in group 17, have 7 valence electrons.
The electrons configuration for O2- is [He]2s22p6.
A halogen is located in group 17 of the periodic table, so the electron configuration for the valance electron would be ns2np5 (n=energy level). So all halogens have 7 valance electrons.
This halogen is astatine.
The halogen family, F,Cl,Br,I,As all have outer shells with 7 electrons
They need 7 more to complete the octet.
Fluorine is the group 17, period 2, halogen. Thus, its electron configuration is 1s2 2s2 2p5. So, as you can see, there are 5 electrons is fluorine's 2p subshell.
The electron configuration of oxygen is [He]2s22p4.
Halogen family members, or elements in group 17, have 7 valence electrons.
1s2s2p3s3p4s4p5s5p6s6p
Fluorine is a halogen. All halogens have 7 valence electrons. There are thus 7 valence electrons for Fluorine, 2 in the 2s orbital, and 5 in the 2p orbitals.
7
1
The electrons configuration for O2- is [He]2s22p6.