Hydrogen
Carbon
Nitrogen
Oxygen
Phosphorus
Sulfur
Selenium
less reactive.beacuse group-1 elements are the most reactive elements.
Beryllium magnesium strantium calcium barium radium
all elements that are not main group elements are metals, and since rhenium is not a main group element, it is a metal. Hope this helped!
Group 1 Metals
Transition metal group,that is between group 2 and 3
Group 1 will be more reactive than group 13 elements
Boron is a only non metal in group 13 elements.
Ununseptium is not a metal; probable a nonmetal in the group 17 (halogens).
The elements in group 17 are known by the name halogens. They are non-metal elements and are at times referred to as salts.
No. Cesium is an alkali metal or group 1 element. Alkaline earth metals are group 2 elements.
No, iodine is not an alkali metal. Iodine is classified as a halogen, a group of elements that are highly reactive nonmetals. Alkali metals are a separate group of elements that include lithium, sodium, and potassium.
Sodium is an Alkali metal. Elements in the center of the periodic table are transition metals.