In ammonium - phosphomolybdate, the oxidation state of Mo is + ___________

Sum of oxidation states of bromine in bromic acid and perbromic acid is ___________.

The oxidation state of phosphorus in hypophosphoric acid is + _____________.

The density of a monobasic strong acid (Molar mass 24.2 g/mol) is 1.21 kg/L. The volume of its solution required for the complete neutralization of 25 mL of 0.24 M NaOH is __________ $$\times$$ 10$$^{-2}$$ mL (Nearest integer)