Question

1.what element is shown in this bohr model? a. helium b. argon c. sulfur d. calcium

Explanation:

Step1: Identify element by proton number

The number of protons in an atom determines the element. Here, the number of protons ($p$) is 18.

Step2: Match proton - number to element

Looking at the periodic table, an element with 18 protons is Argon.

Answer:

B. Argon