What is the maximum covalency exhibited by the first element of group 13 (Boron)? — p Block Elements Chemistry Question

💡 Solution & Explanation

Due to the absence of d-orbitals in its valence shell ($n=2$), Boron only has one 2s and three 2p orbitals. It can form a maximum of 4 covalent bonds (e.g., in the $[BF_4]^-$ ion).