Question

this is an atomic model of an element from the periodic table. how would this atomic structure change if you built an atom of krypton which has an atomic number of 36?
a the number of protons and electrons would both increase by 22 because the atomic number of krypton is 36, and the number of neutrons would increase by 48 because the atomic mass of krypton is 84 amu.
b the number of protons and neutrons would both increase by 22 because the atomic number of krypton is 36, and the number of electrons would increase by 45 because the atomic mass of krypton is 84 amu.
c the number of protons and electrons would both increase by 22 because the atomic number of krypton is 36, and the number of neutrons would increase by 56 because the atomic mass of krypton is 84 amu.
d the number of protons and electrons would both increase by five because the atomic number of krypton is 18, and the number of neutrons would increase by six because the atomic mass of krypton is 40 amu.

Explanation:

Step1: Recall atomic - structure relationships

The atomic number ($Z$) is equal to the number of protons and in a neutral atom, the number of electrons. The mass number ($A$) is the sum of protons and neutrons ($A = p + n$).

Step2: Determine the change in protons and electrons

The given atom in the model has an atomic number (number of protons) less than that of krypton. Krypton has an atomic number of 36. If we assume the initial atom has atomic number $Z_1$ and krypton has $Z_2=36$, the change in the number of protons $\Delta p=Z_2 - Z_1$. Since in a neutral atom, the number of electrons equals the number of protons, the change in the number of electrons is the same as the change in the number of protons.

Step3: Determine the change in neutrons

The atomic mass of krypton is approximately 84 amu. If we assume the initial atom has mass number $A_1$ and krypton has $A_2 = 84$. First, find the number of neutrons in krypton $n_2=A_2 - Z_2=84 - 36 = 48$. We need to find the difference in the number of neutrons compared to the initial atom. The change in the number of neutrons $\Delta n$ is based on the mass - number and atomic - number relationships. The number of protons and electrons in a neutral atom increases by the difference in atomic numbers. The atomic number of krypton is 36. If we assume the initial atom has an atomic number much less than 36, the number of protons and electrons increases by 36 minus the initial atomic number. Here, we assume the initial atom has an atomic number of 14 (from the model where $P = 14$). The change in the number of protons and electrons is $36-14 = 22$. The number of neutrons in krypton: $n=84 - 36=48$. Since we don't know the initial number of neutrons precisely from the given model, but we know the atomic - number and mass - number relationships. The number of protons and electrons increases by 22 (because $36-14 = 22$), and the number of neutrons: atomic mass of krypton is 84, number of protons is 36, so number of neutrons is 48. If we assume the initial number of neutrons was 0 (for simplicity of showing the change), the increase in neutrons is 48.

Answer:

A. The number of protons and electrons would both increase by 22 because the atomic number of krypton is 36, and the number of neutrons would increase by 48 because the atomic mass of krypton is 84 amu.