Outermost electronic config of group 13 element E is 4s2,4p1. The electronic config of a p-block period-5 element…

🧠 The Diagonal Link Diagonal relationships occur between elements of different periods and groups that share similar size and charge density. To find the diagonal partner, move one step right and one step down.

🗺️ The Element Mapping

1. Identify E: Outer config $4s^2 4p^1 \implies$ Group 13, Period 4 (Gallium).
2. Find the Partner:
   • One group right $\to$ Group 14.
   • One period down $\to$ Period 5.
3. The Partner Identity: Tin ($ce{Sn}$).
4. Configuration of Sn: Since it is in Period 5, Group 14, its valence is $5s^2 5p^2$. Full config: $[\text{Kr}] 4d^{10} 5s^2 5p^2$.

⚡ The 13-to-14 Bridge Diagonal pairs like $\ce{Li-Mg}, \ce{Be-Al}, \ce{B-Si}$ show the pattern. For Gallium (Period 4), the diagonal heavy metals like Tin (Period 5) share similar amphoteric properties.

⚠️ Common Traps Don't pick the configuration for Germanium ($[\text{Ar}] 3d^{10} 4s^2 4p^2$). That's the neighbor, not the diagonal partner.

$\boxed{\text{Answer: (d)}}$