Question

match the element to the model that shows an isotope of that element. key proton neutron electron boron carbon helium lithium

Explanation:

Step1: Recall atomic number of elements

Boron has atomic number 5 (5 protons), carbon has atomic number 6 (6 protons), helium has atomic number 2 (2 protons), lithium has atomic number 3 (3 protons).

Step2: Analyze models for number of protons

Count the number of proton - like particles (from the key) in each model. Match based on atomic number.

Answer:

Without seeing the exact number of protons in each model, we can't give a definite match. But the general approach is: For boron, look for a model with 5 protons; for carbon, 6 protons; for helium, 2 protons; for lithium, 3 protons.