MCQ
Which of the following is the correct statement for red lead
- AIt is an active form of lead
- BIts molecular formula is $P{b_2}{O_3}$
- CIt decomposes into $Pb$ and $C{O_2}$
- ✓It decomposes into $PbO$ and ${O_2}$
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$(A)$ Kinetic energy of electron is $\propto \frac{ Z ^{2}}{ n ^{2}}$.
$(B)$ The product of velocity (v) of electron and principal quantum number (n), 'vn' $\propto Z ^{2}$.
$(C)$ Frequency of revolution of electron in an orbit is $\propto \frac{ Z ^{3}}{ n ^{3}}$.
$(D)$ Coulombic force of attraction on the electron is $\propto \frac{ Z ^{3}}{ n ^{4}}$.
Choose the most appropriate answer from the options given below :
