MCQ
A compound ‘$X$’ on ozonolysis forms two molecules of $HCHO$. Compound ‘$X$’ is
- ✓${C_2}{H_4}$
- B${C_2}{H_2}$
- C${C_2}{H_6}$
- D${C_6}{H_6}$
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$3 s^{2}$; $3 s^{2} 3 p^{1}$; $3 s ^{2} 3 p ^{3}$; $3 s^{2} 3 p^{4}$
The correct order of first ionization enthalpy for them is.
[Given, molar mass of $A =100 \,g\, mol ^{-1} ; B =200 \,g\, mol ^{-1}$$\left. C =10,000 \,g\, mol ^{-1}\right]$
$(I)$ $Na_2O_2$
$(II)$ $O_2 [AsF_6]$
$(III)$ $CsO_2$
$(IV)$ $O_2$