The correct order of increasing chemical activity for the given metals is:

Among $Al_2O_3$,$SiO_2$,$P_2O_3$,and $SO_2$,the correct order of acidic strength is:

Regarding $F^{-}$ and $Cl^{-}$,which of the following statements is/are correct?
$(i)$ $Cl^{-}$ can give up an electron more easily than $F^{-}$
$(ii)$ $Cl^{-}$ is a better reducing agent than $F^{-}$
$(iii)$ $Cl^{-}$ is smaller in size than $F^{-}$
$(iv)$ $F^{-}$ can be oxidized more readily than $Cl^{-}$

Why do elements in the same group have similar physical and chemical properties?

Which one of the following represents the electronic configuration of the most electropositive element?

Considering the atomic number and position in the periodic table,arrange the following elements in the increasing order of metallic character: $Si$,$Be$,$Mg$,$Na$,$P$.