QJEEM24Ch78cc: JEE Main 2024 Chemistry - Class 11 JEEM24Ch78cc Solution: Consider the following elements. Which of the following is/are…

In general along the period from left to right, size decreases and metallic character decrease.

In general down the group, size increases and metallic character increases.

$$\begin{array}{rl}& {\mathrm{B}}^{\prime }<{\mathrm{A}}^{\prime }(\text{ size }){\mathrm{C}}^{\prime }>{\mathrm{A}}^{\prime }(\text{ size })\\ & {\mathrm{D}}^{\prime }<{\mathrm{C}}^{\prime }(\text{ size }){\mathrm{D}}^{\prime }>{\mathrm{B}}^{\prime }(\text{ size })\\ & {\mathrm{B}}^{\prime }<{\mathrm{A}}^{\prime }(\text{ metallic character })\\ & {\mathrm{D}}^{\prime }<{\mathrm{C}}^{\prime }(\text{ metallic character })\\ & {\mathrm{B}}^{\prime +}<{\mathrm{A}}^{\prime +}(\text{ size })\\ & {\mathrm{D}}^{\prime +}<{\mathrm{C}}^{\prime +}(\text{ size })\\ & \therefore \text{ C statement is incorrect. }\end{array}$$