MCQ
If $Z_{eff}$ of boron is $x$ then $Z_{eff}$ of oxygen will be
- A$x\, -\, 0.65$
- B$x + 0.65$
- C$x + 1.30$
- ✓$x + 1.95$
Electronic configuration of Boron $=1522522 P 1$
Effective nuclear charge of boron Zeff $=5-2 \times 0.35+2 \times 0.85=2.6$
Atomic number of Oxygen $=8$
Electronic configuration of Oxygen $=1522522 P 4$
Effective nuclear charge of oxygen Zeff $=8-5 \times 0.35+2 \times 0.85=4.55$
Effective nuclear charge of oxygen can be rewritten as $2.6+1.95=4.55$
Consider Zeff of boron as ${ }^{\prime} X$ ', then Zeff of Oxygen is ${ }^{\circ} X +1.95^{\prime}$
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${B{orax}}\xrightarrow{X}{H_3}B{O_3}\xrightarrow{\Delta }{B_2}{O_3}\xrightarrow[\Delta ]{Y}B$,
$X$ and $Y$ are respectively
$S{O_2} + N{O_2} \rightleftharpoons S{O_3} + NO$
If we take one mole of each of four gases in one $L$ container. What would be equilibrium concentration of $NO$ and $NO_2$ respectively