In $NH_3$ and $PH_3$,the common property is

Which of the following is an oxyacid?

Non-metallic oxides dissolve in water to form

What will be the conjugate bases for the Bronsted acids: $HF$,$H_2SO_4$,and $HCO_3^-$?

Observe the following species: $AlCl_3, NH_3, H^{+}, Co^{3+}, OH^{-}, H^{-}, Mg^{2+}, BF_3, Cl^{-}$. How many Lewis bases are present in the above list?

Which of the following is the strongest conjugate base?