They are called halogens. They are in the 17th period. They have 7 electrons in the outermost energy level.
Fluorine and chlorine belongs to group-17.It is also called halogen family.
Chlorine, Fluorine, Bromine, Iodine and Astatine are members of the Halogen family.
Chlorine would be most similar to fluorine. They are in the same group of the periodic table, so they undergo the same types of reaction in general, and chlorine is the next most reactive after fluorine.
Group 7 on the periodic table is called Halogens.
The name given to group 7 elements in the Periodic Table are halogens.
From the elements given, argon shows the least reactivity.
Chlorine, Fluorine, Bromine, Iodine and Astatine are members of the Halogen family.
Chlorine would be most similar to fluorine. They are in the same group of the periodic table, so they undergo the same types of reaction in general, and chlorine is the next most reactive after fluorine.
Group 7 on the periodic table is called Halogens.
The Periodic Table.
The name given to group 7 elements in the Periodic Table are halogens.
Halogen
These elements are called halogens.
Chlorine is a group 17 element and has the highest electronegativity among the elements given.
Mendeleev's periodic law states that "Properties of elements are periodic function of their atomic masses".
From the elements given, argon shows the least reactivity.
Halogen
The elements in Group 1A all form ion with one positive charge. This group is collectively knows as the Alkali metals. They are Lithium, Sodium, Potassium, Rubidium, Caesium, and Francium. Hydrogen ions also can have a positive one charge, but it may, as easily, have a negative one charge.