Halogens have seven valence electrons. These seven valence electrons allow the halogen group of elements to behave in a certain way and exhibit particular characteristics.Know More
Because they have seven electrons in their outermost shell, halogens are extremely electronegative, meaning they have a great attraction for electrons. The tendency of halogens is to fill their outermost shell with their full complement -- eight electrons.
All halogens are extremely reactive and are generally not found alone in nature. The halogen group contains elements such as fluorine and chlorine. They usually bond with extremely electropositive elements such as sodium and potassium. Electropositive elements are electron donators; they don't hold on to their electrons very well.Learn more about Atoms & Molecules
An atom of boron has three valence electrons. The valence electrons of boron occupy the second orbit around the nucleus of the boron atom. Thus, the boron atom has an electronic configuration of [He] 2s2 2p1.Full Answer >
Sulfur has six valence electrons, meaning that each atom of this element has six electrons in its outermost shell. The number of valence electrons that each element has can be predicted based on its location on the periodic table, though this only applies to neutral atoms. An element's main group number indicates how many valence electrons each atom of that element will have, and because sulfur is part of group six on the periodic table, this indicates that this element has six electrons in its outermost electron "shell."Full Answer >
Oxygen has six valence electrons and is assigned a valence number of 2. This means it needs two electrons to satisfy its bonding requirements. When these two electrons come from two hydrogen atoms, the three atoms together form H2O, which is water.Full Answer >
Zirconium has four valance electrons, with two in the 4d level and two in the 5s level. This allows it to combine with other elements and ions in different configurations. It has valence charges of +2, +3 and +4.Full Answer >