Which of these elements will successfully create a 1:1 bond with Boron (B) Phosphorus (P)
Helium (He)
Nitrogen (N)
Aluminum (AI)

Option D, Aluminum

Explanation:

Valency of boron and hence it requires three electron to complete its outermost shell.

Valency of Aluminum is also three and it can donate three electrons to boron to complete the outermost shell of itself as well as the boron.

Hence, Aluminum and Boron will form 1:1 bond with each other. (Al-B)

Hence, option D is correct