The Group 1 , Alkali metals.
They all react with oxygen and water to form the hydroxide and release hydrogen.
They all react with oxygen and water to form the hydroxide and release hydrogen.
The reactivity increases down the Group . Lithium gently effervesces. Sodium 'pop's and sparks. Potassium ignites with a bang. Rubidium is moderately explosive. Caesium is violently explosive. Francium is extremely violently explosive. Francium is not reacted in an open laboratory because it is also radio-active.
All the metals in Group 1 are kept under oil; no oxygen present).
Alkali metals in the first group compose the most reactive family of metals.
The most reactive family of nonmetals is the halogen family.
Elements in the second group have 2 outer shell electrons and also very reactive. What are they called?
I would easily say that Fluorine is the most reactive element in the world. Fluorine is the most electronegative of all elements and will react with all elements. It is so reactive that it cannot be found alone in nature.
Elements in the same family-assuming family means classifications such as non-metals, metals-have similar properties.
halogenes
The halogens are an extremely reactive family of elements in the periodic table. They have a tendency to gain an electron to achieve a full outer shell, making them highly reactive with other elements.
Noble gases, such as helium, neon, and argon, are the least chemically reactive elements. They have a full outer shell of electrons, making them extremely stable and unlikely to form chemical bonds with other elements.
The most reactive nonmetal is fluorine
Halogens, group 17 (7)
The noble gases are the least reactive among all chemical elements.
The boron family is moderately reactive. Boron itself is a relatively unreactive element, while the elements below it in the group, such as aluminum, can be more reactive due to their ability to form stable compounds with other elements.
alkali metals
halogen
halogen
Synthetic elements can be highly reactive due to their unstable nature and tendency to decay into more stable forms through radioactive decay or by forming compounds with other elements. Some synthetic elements have very short half-lives, making them extremely reactive in the short time they exist.
S block has the most reactive elements. The groups 1 and 2 belongs to the s block.