Question

how many electrons are located in the outermost orbit in the bohr model of a boron atom? 3 4 1 2

Explanation:

Step1: Recall Boron's atomic number

Boron has an atomic number of 5, so it has 5 electrons.

Step2: Apply Bohr model electron distribution

In the Bohr model, the first orbit (n=1) holds a maximum of 2 electrons, and the second orbit (n=2) holds the remaining electrons. For 5 electrons: 2 in the first orbit, so \( 5 - 2 = 3 \) in the second (outermost) orbit.

Answer:

3 (corresponding to the option with "3")