Halogens have six valence electrons in the outermost energy level.
Seven
The question is somewhat vague. If the question were written as an atom contains seven electrons in the outermost energy level and that outermost shell is a p-shell then the atom is a halogen. If the atom contains seven electrons in the outermost energy level and that outermost shell is a d-shell or f-shell then the atom is a metal.
A chloride ion (Cl⁻) has gained one electron compared to a neutral chlorine atom, which originally has seven valence electrons in its outermost energy level. Therefore, as a chloride ion, it has eight electrons in its outermost energy level. This configuration is stable and corresponds to the noble gas configuration of argon.
No. That is characteristic of a nonmetal, specifically the halogens (group 17) on the periodic table.
No. That is characteristic of a nonmetal, specifically the halogens (group 17) on the periodic table.
There are 7 outer orbital electrons in an atom of chlorine, as it has 7 electrons in its outermost energy level.
No. That is characteristic of a nonmetal, specifically the halogens (group 17) on the periodic table.
No, hydrogen (H) has one electron in its outermost level.
Bromine has four valence shell electrons. It is located in Group 17 of the periodic table, which means it has seven electrons in its outermost shell (the fourth energy level). Therefore, Bromine has four energy levels, with the outermost shell containing the valence electrons necessary for chemical bonding.
They have seven electrons in their outer shell they are in group seven on the periodic table.
All halogens (fluorine, chlorine, bromine, iodine and astatine) have 7 valence electrons.
There is no Iodone atom, there is however an Iodine atom that has seven valence electrons or seven electrons in outermost shell.