MCQ
Beryllium’s fourth electron will have the four quantum numbers :
- A$n=1,l=0,m=0,s=+1/2$
- B$n=1,l=1,m=1,s=+1/2$
- ✓$n=2,l=0,m=0,s=-1/2$
- D$n=2,l=1,m=0,s=+1/2$
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$x\ MnO + y\ PbO_2 + z\ HNO_3 \to a\ HMnO_4 + b\ Pb(NO_3 )_2 + c\ H_2O$
${C_2}{H_{4(g)}} + {H_{2(g)}} \rightleftharpoons {C_2}{H_{6(g)}}\,;$
$\Delta H = -32.7\,Kcal$ carried out is a vessel, the equilibrium concentration of $C_2H_4$ can be increased by