Question

multiple - choice question

1. what does boron and aluminum have in common?

c. both a and b apply
b. they both have 3 valence electrons
a. they belong to group 13 (sometimes called group 3a).
rewatch

Explanation:

Step1: Analyze option A

Boron (B) and Aluminum (Al) are in group 13 of the periodic table. Group 13 is also sometimes called group 3A.

Step2: Analyze option B

The general valence electron configuration for group 13 elements is \(ns^{2}np^{1}\), so they have 3 valence electrons. Boron has an electron configuration of \(1s^{2}2s^{2}2p^{1}\) and Aluminum has \(1s^{2}2s^{2}2p^{6}3s^{2}3p^{1}\). Both have 3 valence electrons.
Since both A and B are correct, option C is the answer.

Answer:

C. Both A and B apply