Fluorine
Chlorine
Iodine
Bromine
Astatine
The reactivity is increasing, from left to right - for example halogens.
Noble gases are nonmetals. They are colorless, odorless gases that are known for their low reactivity and full outer electron shells.
Semi-metals (or metalloids) are good semiconductors. They have characteristics of both metals and nonmetals. They also have ranging reactivity levels.
Nonmetals with lower electron affinity tend to have higher reactivity because they are more likely to gain electrons to achieve a stable electron configuration. This makes them more reactive in chemical reactions as they can readily form bonds with other elements.
Reactivity in nonmetals increases from left to right in the periodic table primarily due to the increasing electronegativity and electron affinity of these elements. As you move across a period, nonmetals have a stronger tendency to gain electrons to achieve a stable noble gas configuration, making them more reactive. Additionally, the effective nuclear charge increases, attracting electrons more strongly and enhancing their reactivity with other elements.
they go from smaller to the largest
The reactivity is increasing, from left to right - for example halogens.
Noble gases are nonmetals. They are colorless, odorless gases that are known for their low reactivity and full outer electron shells.
Antimony exhibits low reactivity because it is a metalloid, meaning it has properties of both metals and nonmetals. It is fairly stable in air and water, but can react with strong acids to form antimony salts.
Semi-metals (or metalloids) are good semiconductors. They have characteristics of both metals and nonmetals. They also have ranging reactivity levels.
Nonmetals with lower electron affinity tend to have higher reactivity because they are more likely to gain electrons to achieve a stable electron configuration. This makes them more reactive in chemical reactions as they can readily form bonds with other elements.
The reactivity of nonmetals generally decreases as you move from left to right across the periodic table. This is because nonmetals on the right side of the periodic table have a higher electronegativity, making them less likely to lose electrons and more likely to gain electrons.
Hydrochloric acid and sulfuric acid can react with nonmetals, like hydrogen and oxygen, to form various compounds. However, their reactivity may vary depending on the specific nonmetal and conditions of the reaction.
Chlorine belongs to the reactivity group of halogens. Halogens are highly reactive nonmetals that readily form compounds with other elements. Chlorine, in particular, is known for its strong oxidizing properties.
The periodicity of nonmetals is that reactivity increases from left to right across a period, through group 17, the halogens. As you move down a group, reactivity decreases. Fluorine is the most reactive element.
Reactivity in nonmetals increases from left to right in the periodic table primarily due to the increasing electronegativity and electron affinity of these elements. As you move across a period, nonmetals have a stronger tendency to gain electrons to achieve a stable noble gas configuration, making them more reactive. Additionally, the effective nuclear charge increases, attracting electrons more strongly and enhancing their reactivity with other elements.
Electronegativities of metals are very different: alkali metals are very reactive, platinum metals very unreactive. Metals react with nonmetals.