Question
Oxidation number of $P$ in $M{g_2}{P_2}{O_7}$ is
✓
Answer
$\mathop {M{g_2}{P_2}{O_7}}\limits^{\,\,\, * } $
$4 + 2x - 2 \times 7 = 0$;$2x = 14 - 4 = 10$
$2x = 10$; $x = \frac{{10}}{2} = + \,5$.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Oxidation number of oxygen in ozone $({O_3})$ is
→A transition metal ' M ' among $Sc , Ti , V , Cr , Mn$ and Fe has the highest second ionisation enthalpy. The spin only magnetic moment value of $M ^{+}$ion is ______________. BM (Near integer)
(Given atomic number $Sc : 21, Ti : 22, V: 23, Cr$ : $24, Mn : 25, Fe : 26$
→(Given atomic number $Sc : 21, Ti : 22, V: 23, Cr$ : $24, Mn : 25, Fe : 26$
Moles of conc.$HNO_3$ required to oxidise one mole sulphur is :
→$S + HNO_3 \rightarrow H_2SO_4 + 6NO_2 + 2H_2O$
At a given temperature, the vapour pressure of a solution of two volatile liquids $A$ and $B$ is given by the equation $P_S = 120 -80\,\,X_B (X_B =$ mole fraction of $B)$ Vapour pressure of pure $A$ and $B$ at the same temperature are respectively :-
→A fuel contains $25 \%$ $n-$ heptane and $75 \%$ iso-octane. Its octane number is
→When $400\, \mathrm{~mL}$ of $0.2\, \mathrm{M} \,\mathrm{H}_{2} \mathrm{SO}_{4}$ solution is mixed with $600\, \mathrm{~mL}$ of $0.1\, \mathrm{M} \,\mathrm{NaOH}$ solution, the increase in temperature of the final solution is $....\,\times 10^{-2} \,\mathrm{~K}$. (Round off to the Nearest Integer).
→$\left[\right.$ Use $: \mathrm{H}^{+}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq}) \rightarrow \mathrm{H}_{2} \mathrm{O}: \Delta_{\mathrm{\gamma}} \mathrm{H}=-57.1\, \mathrm{k} \mathrm{J} \,\mathrm{mol}^{-1}$
Specific heat of $\mathrm{H}_{2} \mathrm{O}=4.18 \mathrm{Jk}^{-} \mathrm{g}^{-}$
density of $\mathrm{H}_{2} \mathrm{O}=1.0\, \mathrm{~g} \mathrm{~cm}^{-3}$
Assume no change in volume of solution on mixing.]
Allegra, a common prescription drug with the structure shown below, is given for the treatment of seasonal allergies. How many stereogenic carbon does Allegra possess ?
The enthalpy of fusion of ice per mole......$kJ$
→The electronic configuration of a dipositive metal ${M^{2 + }}$ is $ 2, 8, 14 $ and its atomic weight is $56$ $a.m.u.$ The number of neutrons in its nuclei would be
→How many number of optically active isomers are possible for $2,3-$ dibromo butane $1,4-$ dioic acid ?
→