Respuesta :
Explanation :
Hydrogen is first atom of periodic table and has only one electron in its orbital.
It can released its single electron easily and exist as [tex]H^{+}[/tex] ion as well as it can easily accepts an electron to complete its octet and exist as [tex]H^{-}[/tex] therefore it placed in group-1 (alkali metals) as well as group-17 (halogens).
Conclustion:
It can easily released electron and accepts electron therefore its position is not fixed with respect to other elements.
Hydrogen is the first element of the periodic table. It cannot be fixed based on other elements because it is more active than copper and less than lead.
What is Hydrogen?
Hydrogen is the first element with atomic number 1 and atomic mass 1.00 u. It is generally found in the form of diatoms and is a tasteless, colourless, non-toxic, odourless gas.
It contains only a single electron in the atomic orbital and can lose its electron to form the [tex]\rm H^{+}[/tex] ion and can also accept an electron to form [tex]\rm H^{-}[/tex] ion to complete its octet.
Based on the reactive series the most active to least active elements are Mg, Zn, Pb, Cu and Ag. The position of hydrogen cannot be fixed based on these as it is more active than copper but less active than that of the lead.
Therefore, hydrogen can accept and donate electrons and can be alkali metal or halogen.
Learn more about hydrogen here:
https://brainly.com/question/24647400
