Write the Stock notation of `MnO_2`.

Consider a voltaic cell constructed with the following substances: 'Cr^(3+)(aq)+3 e^- rarr Cr(s) E^circ=-0.74 V' 'MnO_4^-(aq)+8 H^+(aq)+5 e^- rarr Mn^(2+)(aq)+4 H_2 O(l)' 'E^circ=+1 . 5 1 V' a) Which substances are oxidised and reduced in this cell? b) Write the overall cell equation and calculate the cell potential. c) Which are the negative and positive electrodes? d) Write the cell notation for this voltaic cell.

Read the statement carefully.A particle in one - dimensional motion with zero speed at any instant may have non zero acceleration at that instant.Write the calculus notation for Instantaneous acceleration.

Represent the following compound using Stock notation: MnO

MnO_4^- and …………. are formed by the disproportionation of MnO_4^(2-) In acidic medium.

Repsented the following compounds using Stock notation : FeO,Fe_2O_3,CuO,MnO,MnO_2,HAuCl_4

What is the oxidation state of Mn in MnO_2 [-4, +2, +4, -2] (Hint: Oxidation state of oxygen is -2)