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sulfur is more reactive than selenium
Br
The highly reactive non-metals are in the halogen group. They just need one more electron to fill the octet. Therefore they are highly reactive. For example fluorine and chlorine. And the highly reactive metals are placed in the first group (alkali metals). For example Sodium and potassium.
Actually, all of them can form positive ion, if reacted with a more reactive element than them. Like Oxygen or Chlorine.
The more reactive elements on the periodic table are farther down in the rows. For example, Te, or Tellurium, is in group 16 and row 5. The elements in row 7 are the most reactive, but technically Tellurium, since it is the farthest down nonmetal on the periodic table, would be the most reactive nonmetal, technically making group 16 the most reactive row of the nonmetals.
sulfur is more reactive than selenium
chlorine is more reactive than selenium. Chlorine needs one electron to form octet whereas selenium needs two.
phosphorous is a highly reactive nonmetal but fluorine is more reactive
Br
A reactive non metal is an element that can gain the electrons or is more electronegative
Yes, very reactive, more than silicon, nitrogen and sulfur (neighbours in Periodic Table. But it is not the most reactive nonmetal, which is fluorine.
Oxygen. Oxygen is a gas making it react faster, while sulfur is a solid.
Yes, very reactive, more than silicon, nitrogen and sulfur (neighbours in periodic table. But it is not the most reactive nonmetal, which is fluorine.
Bromine would likely be more reactive. Little is known about the chemical properties of astatine because it is very rare and has a short half-life.
more reactive
slicon of course
Neither. Chlorine is among the most highly reactive nonmetal elements, but fluorine and oxygen are even more reactive, as are the heavier alkali and alkaline earth metals.